REO EMC-Filters

REO EMC-Filters 

Product catalogue

Content 

General p. 4 

Things worth knowing about EMC filters p. 6 - 15 

Our service for EMC filters p. 16 - 17 

Overview of EMC filters p. 18 - 19 

Single-phase mains filter filters p. 20 -39 

Three-phase mains filters, single-stage p. 40 - 69 

Filter combinations p. 70 - 75 

DC filters p. 76 - 81 

Multistage filters p. 84 - 87 

PLC filters p. 88 

Surge protection p. 89-90 

Ferrite blocks p. 91 

Guidelines to your EMC-Filter p. 92 

Worldwide distribution p. 93 

Applications: 

Renewable Energies 

Drives technology 

2 

Railway solutions 

Medical applications

REO - your partner for EMC filters 

for more than 20 years 

• Comprehensive product range 

• Made in accordance with DIN EN 60931-1 and all 

norms relevant to EMC, such as EN 55011 and 61800-3 

• UL-certified products 

• Broad range of additional services, such as EMC Surveys, Test 

and Validation of components in customers own converters, 

site visits and inhouse test capabilities 

• Personal technical consultancy 

• Client-specific solutions 

• REOplus: REO speaks your language - our worldwide field sales 

offices and production facilities keep REO close to our clients at 

all times, so we are able to react rapidly and efficiently 

• All our products are developed and tested in accordance with 

DIN VDE 0565 

3

General 

REO - Pure Power Perfection 

REO is a leading manufacturer of inductive components and systems. Since its foundation in 

1925, REO has been helping customers regulate current and voltages. 

The development and manufacture of high quality inductors, helping our customers to ensure 

Power Quality (PQ) has played a central role in our business. 

Today‘s wide range of EMC components, such as inductors, transformers and RF and Harmonic 

filters demonstrate our comprehensive knowledge and expertise. 

This coupled with fresh ideas and innovation, enable us to provide our customers with products 

that provide superior functionality and reliability. 

We offer standard products, as well as client specific solutions in drive technology, railway 

engineering, renewable energy and electric transportation. 

4

Our strengths are your advantage 

REO‘s experience of markets, such as railway traction, which go beyond the requirement of 

standard industry, enable us to develop highly efficient components which work reliably, even in 

extreme conditions. 

As a manufacturer of test systems, REO has a good understanding of what it takes to delivery 

quality products. REO has its own test facilities, which can simulate real world conditions, enabling 

us to provide product with uncompromising quality. In addition our inhouse knowledge ensure 

that we can help you specify or design your filter solution and we can provide a variety of services 

to help you make the right decision. We offer comprehensive testing and onsite surveys which 

allow us to optimise the solution to be economical and technically excellent. 

Our development, production and distribution centres in Europe, Asia and North America enable 

us to react rapidly on site and support you with our development and manufacturing skills from 

start to finish of your project. 

Despite our taking the greatest care, this catalogue may contain typing errors or mistakes. 

Technical data are not guaranteed, other changes may be made at any time. 

5

Things worth knowing about EMC filters 

The propagation of interference 

The use of electrical and electrical equipment is becoming more widespread. However to ensure safe and reliable operation, 

electromagnetically compatible conditions must exist i.e. a device must be able to work satisfactorily in its electromagnetic 

environment and without itself causing unacceptable electromagnetic inference in the same environment. 

Electromagnetic inference can cause various faults that are often difficult to diagnose. Crackling and hissing on a radio 

receiver, data errors and processor glitches in computer engineering and even the breakdown of isolation are all possible 

effects. 

To ensure compliance with relevant EMC directives and to avoid instances of interference, appropriate EMC filters must 

be used. 

Electromagnetic interference can be propagated in various ways. The nature of that propagation depends on the frequency 

involved. 

EMC filters are used to suppress conducted inference by 

maximizing the impedance mismatch between line and load. The 

filtering effect works in both directions. This means that interference 

from the power-consuming device to the network as well as from 

the network to the power-consuming device is damped. 

Limits on radio interference voltage 

A number of EN (European norms) specify limits on radio interference 

voltages. 

These EN regulations differentiate between use in residential or light 

industrial areas (Class A) and in industry (Class B). To make it easier 

to select the correct filter and where possible, the classification is 

shown in our catalogue. 

• Low frequency interference 30 MHz is mostly 

radiated. 

Frequencies between 10-30 MHz usually 

experience a combination of both 

propagation mechanisms. 

To give users some practical help, various norms exist that deal with aspects of electromagnetic compatibility. 

But which standard applies where, and when? 

EC Directives, EMC law, standards 

When new installation and plant are being planned, built or extended, measures to ensure their electromagnetic 

compatibility (EMC) must be observed. 

For example, sites which use Variable Speed Drives, must adhere to three norms, the environmental norm EN55011, the 

product norm, EN 61800-3 and the network norm, EN 6100-3-12 

6

Generic standards (unwanted emission): 

• EN 61000-6-3 VDE 0839-6-3 Unwanted emissions in residential 

areas, business areas, commercial areas and small enterprises 

• EN 61000-6-4 VDE 0839-6-4 

Unwanted emissions in industrial areas 

Product family norms (unwanted emission, selection): 

• EN 55011 VDE 0875-11 ISM 

(industrial, scientific and medical) equipment 

• EN 55012 VDE 0879-1 Vehicles, boats and internal combustion 

engine driven devices 

• EN 55013 VDE 0872-13 Sound and television broadcast receivers 

• EN 55014-1 VDE 0875-14 Household Appliances, Electric Tools 

• EN 55015 VDE 0875-15 Fluorescent lamps 

• EN 55022 VDE 0878-22 ITE equipment 

• EN 55025 VDE 0879-2 Automotive internal radio interference 

suppression 

• EN 60601-1-2 VDE 0750-1-2 EMC for medical equipment 

• EN 61800-3 VDE 0160-100 EMC for electronically controlled 

electrical drives 

• EN 61326-1 VDE 0843-20 EMC requirements for electrical 

equipment for measurement, control and laboratory use 

7


The environment norm EN 55011 

These are hierarchically structured to help a user determine which standard to adopt as a basis for their project. There are 

basic norms which describe general aspects of conformity and are used when no group or product norms are available for 

a particular device. 

Class 

A1 

A2 

B 

Environment 

Industry (HF intern) 

Industry (HF extern) 

Residential 

Equipment such as frequency converters that work in industrial areas 

fall into class A1. Class A2 is envisaged only for special high-frequency 

applications such as high-frequency welding equipment. If equipment 

is used in residential areas, business areas or commercial areas, it must 

not exceed the substantially lower limits of class B. 

Example max. quasi-peakin accordance with EN 55011 

The product norm EN 61800-3 

DIN EN 61800-3 „Variable Speed Electrical Drive units - part 3 EMC - Requirements including special test methods“ is a 

product norm that manufacturers of electrical drive units (including Variable Speed Drives) must comply with in order to 

label the equipment with the CE mark. 

Class Environment EMC-Expertise 

C1 Residential environment - 

C2 Residential + industrial EMC-Knowledge 

C3 Industrial EMC-Knowledge 

C4 industrial EMC-Plan 

Equipment in class C1 has he lowest unwanted 

emissions. In general equipment designed 

for higher classes, have fewer measures for 

emissions reduction integrated within them and 

the greater the onus on the user during project 

planning, installation and operation to ensure 

EMC compliance. 

The user needs to decide which class to adhere to and subsequently, which additional measures must be taken to satisfy 

the requirements of the product norm too. The manufacture of a drive system, only guarantees compliance with emission 

limits for the stated environmental class. 

8

Recommendation 

Comparable limits on unwanted emissions 

EN 55011 EN 61800-3 Limit curve norm Filter 

Class B (1+2) Class C1 

2-stage / multistage 

e.g. CNW 542, CNW 102, 

CNW 104, CNW 204, 

CNW 207 

Class A1 Class C2 

2-stage / single-stage 

e.g. CNW 541/542, CNW 

101/102, CNW 103/104, 

CNW 204, CNW 207, 

CNW 114 

Class A2 Class C3 

single-stage 

e.g. CNW 541, CNW 101, 

CNW 103, CNW 203, CNW 

208 

- Class C4 

High-current filter 

CNW 107, CNW 107.3, 

CNW 108 

9


Unwanted emission 

Methods for measuring unwanted emissions 

> Conducted unwanted emission 

• Is measured with a selective radio interference measuring receiver as an interference voltage in the frequency range 

from 9 (150) kHz to 30 MHz (EN norms) 

• Measurement of supply lines (regardless of whether AC or DC) with an artificial mains network 

• Measurement of control or signal lines with a probe or special artificial mains networks 

(e.g. for telecommunications lines) 

• In exceptional cases, e.g. with equipment with very high current consumption for which there are no suitable 

artificial mains networks, or for on-site measurements during which the mains network cannot be disconnected, 

the interference voltage can alternatively be measured with the probe. 

• “Mains feedback effects“ (harmonic oscillations in the mains current and mains voltage fluctuations) in the 

50 Hz..2 kHz range are a special case. These are not actually radio interference, but degradations in the quality of 

the mains voltage. Special measuring equipment is required for measuring these mains feedback effects. 

> Radiated emissions 

• Generally occurs > 30 MHz and is measured using antennas either in the open or in an anechoic chamber. Smaller 

equipment may be tested using a magnetic field probe. 

Types of interference 

Distinctions are made between different types of interference. In general, a combination of interference currents that differ 

in their directions of propagation always occurs. 

Source Quelle 

Common Gleichtakt-Störung 

mode interference 

(Asymmetrischer (Assymetrical interference) Störstrom) 

Senke Sink 

Gegentakt-Störung 

Differential-mode 

(Symmetrischer (Symmetrical interference) Störstrom) 

Earth-conductor Erdleiter-Strom current 

Overview of conducted radio interference and its corrective measures 

1. Symmetrical (differential-mode) interference 

(typ. < 1 MHz, e.g. due to phase-angle controls, rectifiers, semiconductor relays): 

• Elimination of the interference with X capacitors and linear chokes on powdered iron cores. 

The X capacitors short-circuit the high-frequency interference, while the linear chokes increase the impedance of the 

symmetrical interference-current circuit, thereby reducing the interference current. 

2. Asymmetrical (common-mode) interference 

(typ. > 1 MHz, e.g. by frequency converter, switched-mode power supplies, quartz-oscillators): 

Elimination of the interference with Y capacitors and current-compensated chokes. 

The Y capacitors short-circuit the high-frequency interference to earth, while the current-compensated chokes 

increase the impedance of the asymmetrical interference-current circuit. 

Interference characteristic 

10

The essential active components of mains filters are chokes and capacitors. 

SYMMETRICAL SYMMETRISCH ASYMMETRICAL ASYMMETRISCH FIELD FELD 

Interference Störungscharakteristik 

characteristics 

CABLES COUPLING FIELD 

LEITUNG KOPPLUNG FELD 

Interference Störungsausbreitung 

propagation 

X-KO. 

PK-DR. X-KO. 

PK-DR. 

Y-KO. 

SK-DR. Y-KO. 

SK-DR. 

MASS 

MASSE 

SHIELDING 

SCHIRMUNG 

Corrective measures 

Abhilfemaßnahmen 

INTERFERENCE VOLTAGE 

STÖRSPANNUNG 

FIELD STRENGTH 

FELDSTÄRKE 

Limit values 

Grenzwerte 

10 -2 10 -1 10 0 10 1 10 2 10 3 MHz 

10 -2 10 -1 10 0 10 1 10 2 f 

10 3 MHz 

f 

Frequency overview 

PK-DR.: Powder core chokes 

Frequenzübersicht 

X-KO.: X-Capacitors 

PK-DR.: Pulverkerndrosseln 

SK-DR.: Common-mode chokes 

X-KO.: X-Kondensatoren 

Y-KO.: Y-Capacitors 

SK-DR.: Stromkompensierte Drosseln 

Y-KO.: Y-Kondensatoren 

These two components are arranged in such a way that, depending on the nature of the prevailing interference (commonmode 

interference or differential-mode interference), the filter has the greatest possible damping effect. Filters with high 

attenuation values can be made by connecting various low-pass filters in series. Combinations of three-phase filters are 

made with similar series circuts. 

Because of the various kinds of interference, any given method of filtering is usually insufficient to attenuate all values. A 

combination of X capacitors, Y capacitors, current-compensated chokes and uncompensated chokes is required in order to 

to meet all requirements. These components must be matched to each other in order to achieve their optimal filtering effect 

in the standardized frequency range (conducted interference at 150 kHz-30 MHz). 

Collective or individual suppression 

11


Collective suppression 

Individual suppression 

There is an economic advantage in planning the optimal suppression of interference. The number of filters 

required can be minimized by simultaneously suppressing interference in several devices, say in a switch cabinet. 

Problems with collective suppression 

Such a solution is problematic when additional components have to be installed. 

The nominal current of the filter must not be exceeded. Lengthy connecting leads have to be shielded and the 

power-consuming devices are not isolated - so possible unwanted interaction may occur. 

Because of this problem, individual suppression is usually more economic. 

Nominal current, maximum continuous operating current and ambient temperature 

The nominal current is the maximum continuous operating current at 100% load, with correct installation, mains 

frequency of 50/60 Hz, and a maximum permissible ambient temperature of 40°C. The permissible continuous 

operating current falls off at a higher ambient temperature, or with loads that generate mains harmonics, e.g. 

phase-angle controls, triacs, semiconductor relays or primary switched-mode power supplies. Brief overcurrents 

are permissible if they are followed by a correspondingly lower current load, but this must always be tested 

individually. 

Fall-off in current at temperatures above 40°C 

The permissible current carrying capacity is a function of ambient temperature. At temperatures of up to 40°C, a 

filter can be operated at its nominal current. 

At higher temperatures, the permissible 

current falls off. At 85°C, the zero point for 

the current load is reached. 

Environment 

40°C 85°C 

12

Insertion attenuation 

Several components or filters may be suitable for an application in principle. The attenuation curve of a given 

filter is useful as as aid to selection but does not always give a true representation of performance in a real-world 

application. 

Comparison CNW 111/10 and CNW 102/10 

Optimal installation 

The performance of a filter can be compromised with poor installation. Connection cables must as short as 

possible and the use of flat braids for earthing can provide additional suppression. In order to suppress radiated 

interference (approximately 10 MHz - 100 MHz), it is advisable to place ferrite beads over the inputs and outputs 

at the source of interference to attenuate the high frequencies. 

Leakage current 

One of the most important parameters in power supply filters is leakage current, which flows during the operation 

of electrical equipment due to parasitic capacitances and capacitors connected between the live conductor and 

chassis potential. For safety reasons, leakage current must not exceed specific values (limits specific to a device 

or a country). 

Leakage current in power supply filters depends on the total of the parasitic and intended capacitance between 

live conductors and the (metal) housing, the working voltage, the frequency, and any discharging resistors that 

may be present. 

In a single-phase power supply filter, leakage current is the current that can flow between any live conductor and 

the chassis potential. 

The leakage currents stated in technical data for power supply filters in three-phase systems assume the following 

conditions (worst case): 

• Tolerance of the rated voltage +10% 

• Capacitance tolerance of the capacitors +20% 

• One phase energized (two phases interrupted) 

If the permissible value of leakage current for an electrical device or plant is exceeded (e.g. 3.5 mA for 

stationary devices in protection class I), it must be „conducted away and/or controlled“ in accordance with DIN 

VDE 0100 and DIN VDE. You can choose between the following options: 

• protective conductor cross-section ≥10 mm2 Cu 

• monitoring the protective conductor and automatically switching off if a fault occurs 

• laying an additional conductor in compliance with the required cross-sections 

13


Permissible leakage currents 

Electrical equipment for domestic use and similar purposes in accordance with EN 60335-1 

Protection class 

Class Explication 

0 Devices with basic insulation 

without protective conductor 

0I Devices with basic insulation 

without protective 

conductor, but with 

protective conductor-end 

terminals 

I Devices with protective 

conductor 

II 

III 

Devices with double or 

reinforced insulation without 

protective conductor 

Devices with 

extra-low voltage safety 

(SELV) 

Device type, 

connection type 

- 0,5 mA 

- 0,5 mA 

(Leakage current) 

Contact current 

Appreciability and 

reaction 

Portable 

0,75 mA 

Fixed Installation 3,5 mA 

Fixed heating appliance 0,75 mA 

3,5 mA 

0,75 mA or 0,75 mA/ 

kW Rated current 

Max. value 5 MA 

- 0,25 mA 

- 0,5 mA 

Requirements for systems and equipment with a rated frequency 

of 50 Hz or 60 Hz in accordance with EN 61140 

Consumables Operating current Max. Protective conductor current 

With connectors< 32 A < 4 A 2 mA 

7 A and < 10 A 0,5 mA per A of the rated current 

10 A 5 mA 

With connectors 

> 32 A or permanently 

attached or fixed (without 

special measures for the 

protection conductor) 

< 7 A 3,5 mA 

> 7 A aber < 20 A 0,5 mA per A of the rated current 

20 A 10 mA 

14 

Permanently connected 

with protective conductor 

> 10 mm 2 Cu (or 16 mm 2 

Al) or connection of 

two protective earth via 

separate terminal points 

with standard crosssection 

- 5% from the rated current of the outer 

conductor

Technical data 

Regulations 

Unless otherwise agreed with a client, we manufacture in accordance with the following regulations: 

• DIN EN 60939-1; VDE 0565-3 

• DIN EN 133200-1:2011-04 

• IEC 60068-1 

• Materials: all possible in UL 

Climatic category (IEC 60068-1) 

For classification of components for various climatic and mechanical conditions. 

Upper limit temperature: + 85°C 

Lower limit temperature: - 25°C 

25/85/21 Relative Humidity: 95% 

21 days / year 

Frequency 

All REO - filters also work at a lower frequency (including DC) than with Fn = 50/60 Hz. 

On request filters for higher frequencies can also be designed. 

Voltage test on noise filters to EN133200 

Rated voltage Between the terminals Inner and outer insulation 

C ≤ 1µF C > 1µF 

150 ≤ UN ≥ 250V 4,3 UN (DC) 1500 V AC or 2250 V DC 4,3 UN DC 

250 ≤ UN ≥ 500V 4,3 UN (DC) 2 kV AC or 3 kV DC 4,3 UN DC 

15

Our service for EMC-filters 

Services 

Conducted interference 

As well as manufacturing filters, we can also test your equipment in our own EMC facility. In this test we establish 

the conducted emissions and then select a filter to achieve the required standard. This provides a very fast an 

economic route to compliance. 

Additional measurements 

Testing of drive technology components up to 1000 m motor leads on converters with motor-generator sets going 

up to 500 A 

Tests on clients‘ converters to prove EMC compliance 

EMC measurements on EMC filters at clients‘ premises 

EMC measurement of conducted interference 

Measuring equipment Testing station 

• ESH 2-Z5 artificial mains network (ROHDE & SCHWARZ) 

• ESHS 10 radio interference measuring receiver (ROHDE & SCHWARZ) 

• miscellaneous evaluation software 

16

Installation of power supply filters 

The following points should be considered when installing a filter or filters: 

• nominal voltage, nominal current and mains frequency 

• emission limits as a function of the installation site, e.g. EN 55011 Class A 

• mechanical protection against contact and splashed water (IP Code) 

• climatic conditions at the place of use (temperature, humidity) permissible leakage current 

Assembly instructions 

• As close as possible to the device or module whose interference is to be suppressed, so that 

the connecting leads to the equipment are kept as short as possible. This is important because 

these connecting leads between the suppression filter and the device act as transmitting or 

receiving antennas that then radiate into the environment the interference emitted by the 

device before it reaches the filter. 

• A common error in practice is to cross the cables connecting to the mains and those 

connecting to the filter or, even worse, to lay them partly in parallel. The filter then becomes 

virtually ineffective due to direct coupling through the lines. 

• With EMC filters, it must be ensured that the connection from the earthing point to the 

equipment or to the body of the switch cabinet is as short and flat as possible. Where filters have 

a metal housing or a metal baseplate, this should without fail be connected to the equipment 

chassis with a flat electrically conductive lead. For example, via fastening screws with toothed 

lock washers etc. 

• In order to suppress radiated interference (approximately 10 MHz - 100 MHz), it is advisable 

to place ferrite beads over the inputs and outputs at the source of interference to attenuate the 

high frequencies. 

• There are a large number of applications in which leakage current must be limited. The 

reasons are, for example, to protect persons, residual current circuit breakers and IT networks. 

• When installing a filter, it must be ensured that the leakage current does not exceed the 

maximum for the application and relevant standard or regulation. 

• Country specific regulations for fixed Drive installations allow leakage currents upto the 

rated current when used with a high integrity earth system. A high integrity earth system either 

has an earth conductor greater than 10mm 2 or a secondary conductor is placed in parallel. 

• When filters are used leakage currents will often flow in the protective earth (PE) these may 

be substantially higher than what is generally allowed or expected. In order to protect against 

hazardous voltages the filters must be securely and safely grounded before use, this ensures 

that EMC performance and safety is not compromised. 

Operation without connection to the earth is not permitted! 

Use of an residual current device (RCD), or earth leakage trip may not be possible 

17

REO EMC-Filter Overview 

SINGLE PHASE Mains filter 

Single-Stage Filter 

CNW 101 

CNW 116 

CNW 201 

Product group 

Rated currents 

Voltage 

Damping 

1-phase mains filter 

3 - 25 A 

250 V 

High 


8 - 63 A 

250 V 

Very high 


16 - 63 A 

250/480 V 

High 

THREE PHASE Mains filter 

Single-Stage Filter 

CNW 103 

CNW 105 

CNW 114 

CNW 203, 205 

CNW 208 

Product group 


Voltage 

Damping 


3 - 150 A 

440 V 

High 


3 - 150 A 

440 V 

High 


8 - 1200 A 

440/480/690 V 

Very high 


16 - 64 A 

480 V 

High 


7 - 180 A 

480 V 

High 

FILTER COMBINATIONS HIGH CURRENT FILTER DC-FILTER 

CNW 307 

CNW 304 

CNW 107.3 

CNW 108 

CNW 173 

Product group 


Voltage 

Damping 

Single-stage filter 

3 - 50 A 

400 V 

High 


8 - 150 A 

400 V 

High 

Three wire filter 

280 - 3000 A 

480 V 

Very high 

Four wire 

filter 280 - 700 A 

480 V 

Very high 

DC-Filter 

25 - 1000 A 

1000 V DC 

High 

18 

* For more information please contact us: +49 (0) 33971-4850, UL approvals partly limited to specific types.

Two-Stage Filter 

CNW 521 

CNW 541 CNW 102 CNW 202 CNW 522 

CNW 542 


3 - 30 A 

250 V 

High 


1 - 10 A 

250 V 

High 


3 - 25 A 

250 V 

High 


7 - 180 A 

270/480 V 

Very high 


3 - 20 A 

250 V 

Very high 


3 - 30 A 

250 V 

Very high 

Two-Stage Filter 

CNW 523, 525 

CNW 543 

CNW 104 

CNW 106 

CNW 204, 

206, 207 

CNW 524 


3 - 30 A 

480 V 

Very high 


10 - 36 A 

480 V 

High 


3 - 150 A 

480 V 

Very high 


3 - 150 A 

480 V 

Very high 


5 - 200 A 

480 V 

Very high 


3 - 30 A 

480 V 

Very high 

MULTI-STAGE FILTER 

PLC POWERLINE ACCESSORIES 

CNW 703 

Surge Protection 

CNW 721 

CNW 174 

CNW 141, 142, 143, 145 CNW 147, 148, 149, 154 

CNW 161 

Surge Protection 

FERRITE BLOCKS 

DC-Filter 

10 - 600 A 

900 V DC 

High 

Multi-stage filter 

16 - 400 A 

230 V 

Typical 


16 - 400 A 

580 V 

Typical 

16 A 

250 V 

Typical 

For high currents 

FERRITE SLEEVES 

For small currents 

19

Single phase mains filter 

20

Single phase filter, single- or two-stages 


CNW 101, currents from 3 - 20 A....................................... p. 22 - 23 


CNW 201, currents from 16 - 63 A..................................... p. 26 - 27 

CNW 521, currents from 3 -30 A........................................ p. 28 - 29 

CNW 541, currents from 6 - 30 A........................................ p. 30 -31 

Two-stage filter 





Despite the utmost care Typing errors and mistakes are not excluded. 

Technical data subject to change. Changes are possible at any time. 

21

REO CNW 101 

Single phase mains filter, single-stage 

* 

Benefits 

• Compact construction 

• Easy installation 

• Touch-proof if used with insulated spade connectors 

• Good damping performance at a low leakage current 

• Also available as a medical version or with 

a lower leakage current 

• Optional with overvoltage protection 

• UL approval for the complete model range - E217177 

(not for N- and MED-versions) 

Series REO CNW 101 


Type 

Rated voltage 

[V] 

Rated current 

[A] 


[mA] 

Cx [µF] Cy [nF] L [mH] R [kOhm] 

CNW 101/3 250 3

Attenuation curve CNW 101/16* 

Typical applications 

- Inverter applications 

- Switch-mode power supplies 

for industrial electronics 

- Telecommunications, information technology 

- Medical applications 

*For additional attenuation curves, please refer to our data sheet. 

Dimensions 

Type Connection PE-Connection Dimensions [mm] 

B D H L 1 L 2 L 3 

CNW 101/3 Faston spade 6,3x0,8 45 4,2 30 70 60 52 






L3 

L2 

L1 

D 

H 

B 

23



Benefits 

* 

• compact construction 

• easy installation 

• touch-proof terminals 

• low temperature rise 

• dimensions compatible to those of other 

manufacterers 

• UL approval for the CNW 116/12 - E217177 



Type 

Rated voltage 

[V] 

Rated current 

[A] 


[mA] 


CNW 116/8 250 8



- Inverter applications 

- Switch-mode power supplies for industrial 

electronics 

- Telecommunications, 

- Data systems engineering 

- Medical equipment 

*For additional attenuation curves, please refer to our data sheet 

Dimensions 


B1 B2 B3 H 1 L1 L 2 L 3 

CNW 116/8 Terminals 4 mm 2 Earthing bolt (M5) 105 95 84,5 57 120 100 51 





CNW 116/63 Terminals 10 mm 2 Earthing bolt (M6) 98 78 70 70 180 150 90 


B3 

H1 

B1 

B2 

4,5 

L3 

L2 

L1 

6 

25



Benefits 


• small mounting surface in the cabinet 

• good heat dissipation 

• suitable for use with most frequency converters 

• terminal or cable connection 

• special cable lengths on request 

• high damping with small leakage current 



Type 

Rated voltage 

[V] 

Rated current 

[A] 


[mA] 


CNW 201/16/250 250 16



- Frequency converters for motor drives 

- Wind power installations 

- Power supply units 


Dimensions 

Type Connection Connections Dimensions [mm] 

L1 L2 L3 B1 B 2 H1 

CNW 201/16/250 Terminals 4 mm 2 Earthing bolt (1,5 mm 2 ) Terminals 4 mm 2 280 265 250 60 35 150 

CNW 201/30/250 Terminals 6 mm 2 Earthing bolt (4 mm 2 ) Terminals 6 mm 2 280 265 250 60 35 150 



CNW 201/16/480 Terminals 4 mm 2 Earthing bolt (1,5 mm 2 ) Terminals 4 mm 2 280 265 250 60 35 150 





6,5 

L2 

B2 

B1 

L3 

H 

L1 

27



Benefits 

• EMC filters for rail mounting in the control 

cabinet 


• aesthetic design 




• very high damping with small leakage current 



Type 

Rated voltage 

[V] 

Rated 

current [A] 

Leakage 

current 

[mA] 


CNW 521/3 250 3

Attenuation curve CNW 521 


- Interference suppression of electronic devices in 

control panels 

- Easy installation on top hat rail 

Dimensions 


B H L1 L 2 

CNW 521/3 Terminals 4 mm 2 Terminals 4 mm 2 64 74 120 100 






H 

B 

L2 

L1 


29



Benefits 


• can be mounted as low-profile an upright 


• various different connections possible 


• optional with crowbar circuit 



• also possible as medical version or version with 

small leakage current 



Type 

Rated voltage 

[V] 

Rated current 

[A] 


[mA] 


CNW 541/6 250 6



- Switch-mode power supplies 

for industrial electronics 

- telecommunications 

- data systems engineering 

Dimensions 

Type Dimensions Connection 

L1 L2 L3 B1 B2 H1 H2 D 

Design K 

CNW 541/6 108 91 76 52 25 80 50 7 

CNW 541/10 108 91 76 52 25 80 50 7 

CNW 541/16 108 91 76 52 25 80 50 7 

CNW 541/20 108 91 76 52 25 80 50 7 

CNW 541/30 108 91 76 52 25 80 50 7 

Design P 

CNW 541/6 119 102 87 52 25 80 50 7 

CNW 541/10 119 102 87 52 25 80 50 7 

CNW 541/16 119 102 87 52 25 80 50 7 

CNW 541/20 119 102 87 52 25 80 50 7 

CNW 541/30 119 102 87 52 25 80 50 7 

Design F 

CNW 541/6 102 85 70 52 25 80 50 7 

CNW 541/10 102 85 70 52 25 80 50 7 

CNW 541/16 102 85 70 52 25 80 50 7 

CNW 541/20 102 85 70 52 25 80 50 7 

Design L 

CNW 541/6 108 91 76 52 25 80 50 7 

CNW 541/10 108 91 76 52 25 80 50 7 

CNW 541/16 108 91 76 52 25 80 50 7 

CNW 541/20 108 91 76 52 25 80 50 7 

CNW 541/30 108 91 76 52 25 80 50 7 

Terminals 

4 mm² 

(from 20 A - 6 

mm²) 

2 PE-Bolts M6 

platinum 

terminals 

front / 

inside 

Flat plug 

6,3 x 0,8 

inside 

Litz wires 

A1, A2 = 300 mm 


Design K Design P Design F Design L 

31


Single phase mains filter, two-stage 

* 

Benefits 



• touch-proof if used with insulated spade connectors 

• very good damping performance at 

a low leakage current 

• also as a medical version or 

with a lower leakage current available 

• optional with overvoltage protection 

• UL approval for the complete model range - E217177 

(except N- and MED-versions) 



Type 

Rated voltage 

[V] 

Rated current 

[A] 


[mA] 


CNW 102/3 250 3




electronics 

- frequency converters for motor drives 

- power supply units 

- medical and telecommunication applications 

- DC applications 


Dimensions 


B D H L 1 L 2 L 3 

CNW 102/3 6,3 x 0,8 mm Flat plug 6,3 x 0,8 mm Flat plug 50 5,3 40 87 75 65 






L3 

L2 

L1 

D 

H 

B 

33



Benefits 










Type 

Rated voltage 

[V] 

Rated current 

[A] 


[mA] 


CNW 202/7 270/480 7



- Frequency converters for motor drives, wind 

power installations and power supply units 


Dimensions 

Type Input Connection Dimensions [mm] 

L1 L2 L3 L4 B1 B 2 B3 H1 

CNW 202/7 Terminals 4 mm 2 Litz wire (1,5 mm 2 ) 2 255 240 225 300 50 25 6,5 126 


CNW 202/30 Terminals 6 mm 2 Litz wire (4 mm 2 ) 3 335 320 305 400 60 35 6,5 150 



CNW 202/75 Terminals 25 mm 2 --- 5 330 314 300 --- 80 55 6,5 220 





L2 

B3 

B2 

B1 

L3 

Litzen 

H 

L4 

L1 

35



Benefits 

• EMC filters for rail mounting in the control 

cabinet 









Type 

Rated voltage 

[V] 

Rated current 

[A] 


[mA] 


CNW 522/3 250 3




control panels 

- easy installation on top hat rail 

Dimensions 


B H 1 L1 L 2 






H 

B 

L2 

L1 


37



Benefits 


• can be assembled as low-profile an upright 




• optional with overvoltage protection 



• also available as medical version with small leakage current 



Type 

Rated voltage 

[V] 

Rated 

current [A] 


[mA] 


CNW 542/3 250 3

Attenuation curve CNW 542/16 



electronics, 

- Telecommunication systems 


- control construction 

- DC applications 

Dimensions (Dimensional drawing see page 31) 


L1 L2 L3 B1 B2 H1 H2 D 

Design K (Dimensional drawing see page 31) 

CNW 542/3 108 91 76 52 25 80 50 7 

CNW 542/6 108 91 76 52 25 80 50 7 

CNW 542/10 108 91 76 52 25 80 50 7 

CNW 542/16 108 91 76 52 25 80 50 7 

CNW 542/20 122 105 98 52 25 80 50 7 

CNW 542/25 108 91 76 52 25 80 50 7 

CNW 542/30 130 114 98 52 25 80 50 7 

Design P (Dimensional drawing see page 31)) 

CNW 542/3 143 126 111 52 25 80 50 7 

CNW 542/6 143 126 111 52 25 80 50 7 

CNW 542/10 143 126 111 52 25 80 50 7 

CNW 542/16 143 126 111 52 25 80 50 7 

CNW 542/20 143 126 111 52 25 80 50 7 

CNW 542/25 143 126 111 52 25 80 50 7 

CNW 542/30 143 126 111 52 25 80 50 7 

Design F (Dimensional drawing see page 31) 

CNW 542/3 126 109 94 52 25 80 50 7 

CNW 542/6 126 109 94 52 25 80 50 7 

CNW 542/10 126 109 94 52 25 80 50 7 

CNW 542/16 126 109 94 52 25 80 50 7 

CNW 542/20 126 109 94 52 25 80 50 7 

Design L (Dimensional drawing see page 31) 

CNW 542/3 108 91 76 52 25 80 50 7 

CNW 542/6 108 91 76 52 25 80 50 7 

CNW 542/10 108 91 76 52 25 80 50 7 

CNW 542/16 108 91 76 52 25 80 50 7 

CNW 542/20 108 91 76 52 25 80 50 7 

CNW 542/25 108 91 76 52 25 80 50 7 

CNW 542/30 108 91 76 52 25 80 50 7 

Terminals 

4 mm² 

(from 20 A - 6 

mm²) 

2 PE-Bolts M6 

Tinned terminals 

front / 

inside 

Faston Spades 

6,3 x 0,8 

inside 

Litz wires 

A1, A2 = 300 mm 


39

Three phase mains filter 

40

Three phase mains filter, single or two-stage 

Single-stage filter, three wire 


CNW 107.3, currents from 280 - 3000 A............................ p. 44 - 45 

CNW 114, currents from 8-1200 A..................................... p. 46 - 47 

CNW 203, currents from 16 - 50 A............................................ p. 48 

CNW 523, currents from 3 - 30 A.............................................. p. 49 



Single-stage filter, four wire 



CNW 525, currents from 3 - 30 A.............................................. p. 57 

Two-stage filter, three wire 





Two-stage filter, four wire 



CNW 108, currents from 280 - 700 A................................. p. 68 - 69 

41


Three phase mains filter, single-stage, three wire 

* 

Benefits 





• good damping performance at 


• useable for industrial applications 

• UL approval for the complete model range 



Type 

Rated voltage 

[V] 

Rated 

current [A] 


[mA] 


CNW 103/3 3x480 3x3




(e.g. lifts, materials handling, pumps, ventilation 

and air-conditioning systems, industrial 

applications, wind power installations and 

power supply units 


Dimensions 

Type Housing Connection PE-Connection Dimensions [mm] 

B1 B2 B3 D H L 1 L 2 L 3 

CNW 103/3 A Flat plug 6,3x0,8 mm Flat plug 6,3x0,8 mm 53 --- --- 5,3 40 110 100 90 



CNW 103/16 B Terminals 4 mm 2 Earthing bolt (M5) 98 81 70 5,3 70 172 150 90 








H 

L3 

L2 

L1 

D 

L3 

L2 

L1 

D 

Housing A 

H 

B3 

B2 

B1 

Housing B 

B 

43

REO CNW 107.3 

High current mains filter, three wire 

Benefits 

• specifically desiged for high performances 

• suitable for offshore applications 

• compact design 


• rail connector 

• fast installation 

Series REO CNW 107.3 


Type 

Rated voltage 

[V] 

Rated current 

[A] 


[mA] 

L [µH] ΣCx [µF] ΣCy [µF] 

CNW 107.3/280 3 x 480 / 690 3x280

Attenuation curve CNW 107.3 


- Suppression of frequency inverters, 

Power electronics and general suppression for 

higher power ratings on wind energy and 

industrial applications. 

Dimensions 


L 1 L 2 L 3 L4 B1 B2 H1 

CNW 107.3/280 30x5 M12 420 335 320 296 220 175 135 

CNW 107.3/500 40x5 M12 420 335 320 296 220 175 135 

CNW 107.3/700 40x10 M12 420 335 320 296 220 175 135 

CNW 107.3/1000 40x10 M12 420 335 320 296 220 175 135 

CNW 107.3/1600 50 x 10 M12 590 406 340 360 330 300 180 

CNW 107.3/2500 80 x 15 M12 590 406 340 360 330 300 180 

CNW 107.3/3000 120 x 15 M12 700 506 400 420 390 360 240 

REO CNW 107.3 

Housing Aluminum oder stainless steel 

B1 

B2 

H1 

D1 

M 

L1 

L4 

L3 

L2 

45



Benefits 





• very good attenuation in a wide frequency spectrum 

• IT-versions possible 

• UL approval for CNW 114/8 up to CNW 114/600 A 

(doesn´t apply to the 690 V version) 



Type 

Rated voltage 

[V] 

Rated 

current [A] 


[mA] 


CNW 114/8 

8



- Frequency converters for motor drives, 

wind power installations and power supply units 


Dimensions 


B1 B2 B3 D E H L 1 L 2 L 3 

CNW 114/8 B/SR Terminals 4 mm 2 Earthing bolt (M6) 115 100 85 6,2 - 60 202 180 115 






CNW 114/80 C/SR Terminals 25 mm 2 Earthing bolt (M10) 170 130 - 8,5 - 90 400 373 350 





CNW 114/450 D/SR Bars (25x8) Earthing bolt (M12) 300 275 250 9,0 10,5 160 610 516 210 





47



Benefits 




• universal use with almost all types of frequency converters 

• with terminal or line termination 

• special cable length on request 


• UL approval for 16 A CNW 203/16 

* 






Type 

Rated voltage 

[V] 

Rated 

current [A] 


[mA] 


CNW 203/16/SE 3x480 16



Benefits 








- Interference suppression of electronic devices 

in control panels 




Type 

Rated voltage 

[V] 

Rated 

current [A] 


[mA] 


CNW 523/3 3x480 3 x 3



Benefits 




• universal use with almost all types 

of frequency converters 

• with terminal or line connection 

• special cable length on request 



Type 

Rated voltage 

[V] 

Rated 

current [A] 


[mA] 


CNW 208 / 7 3x480 7 35 2,0 2,2 1,3 560 

CNW 208 / 16 3x480 16 35 3,7 2,2 1,3 560 

CNW 208 / 30 3x480 30 35 2,5 2,2 1,3 560 

CNW 208 / 42 3x480 42 35 0,8 1,6 0,65 560 

CNW 208 / 55 3x480 55 35 0,9 2,2 1,3 560 

CNW 208 / 75 3x480 75 35 0,8 3,3 1,6 560 

CNW 208 / 100 3x480 100 35 0,5 3,3 1,6 560 


CNW 208 / 130 3x480 130 35 0,5 3,3 1,6 560 

CNW 208 / 180 3x480 180 35 0,3 3,3 1,6 560 

50






Dimensions 

Type Input Output PE 

Dimensions [mm] 

Connection 

L1 L2 L3 L4 B1 B2 B2 H1 

CNW 208 / 7 Terminals 4 mm 2 Litze (1,5mm²) 2 M5 190 180 160 300 40 20 5,5 70 




CNW 208 / 55 Terminals 10 mm 2 Litze (10mm²) 4 M6 250 235 220 500 85 60 5,5 90 

CNW 208 / 75 Terminals 16 mm 2 -- 5 M6 270 255 240 -- 80 60 6,5 135 





L2 

ø 6,5 

B2 

B1 

L3 

Litzen 

H 

L4 

L1 

51



Benefits 


• universal mounting 

• easy to install 

• aluminium-profile housing 



• overvoltage protection possible 

• suitable for use with almost all types of frequency converters 




Type 

Rated voltage 

[V] 

Rated 

current [A] 


[mA] 

L [mH] Cx [µF] Cy [nF] Rx 

[kOhm] 

Ry 

[kOhm] 

CNW 543/10 3x480 10




- wind power installations 



Dimensions 


L1 L2 L3 B1 B2 H1 H2 D 

Design K 

CNW 543/10 232 215 200 52 25 80 50 7 

CNW 543/16 232 215 200 52 25 80 50 7 

Terminals 

4 mm² 

(ab 20 A - 6 mm²) 

2 PE-Bolts M6 

CNW 543/25 232 215 200 52 25 80 50 7 

CNW 543/30 272 255 240 52 25 80 50 7 

Design P 

CNW 543/10 252 235 220 52 25 80 50 7 

Platinum- 

CNW 543/16 252 235 220 52 25 80 50 7 Terminals 

CNW 543/20 252 235 220 52 25 80 50 7 Front 4H/ 

inside 

CNW 543/30 292 275 260 52 25 80 50 7 

Design F 

CNW 543/10 247 232 217 52 25 80 50 7 Flat plugs 

CNW 543/16 247 232 217 52 25 80 50 7 

6,3 x 0,8 

inside 

Design L 

CNW 543/10 232 215 200 52 25 80 50 7 

CNW 543/16 232 215 200 52 25 80 50 7 

CNW 543/20 232 215 200 52 25 80 50 7 

CNW 543/30 272 255 240 52 25 80 50 7 

Litz wire 

A1, A2 = 300 mm 


Design K Design P Design F Design L 

53


Three phase mains filter, single-stage, four wire 

Benefits 




• good damping performance at 





Type 

Rated voltage 

[V] 

Rated 

current [A] 


[mA] 


CNW 105/3 3x480 4x3



- Power supply units for data systems engineering, 

telecommunications, medical equipment 

and industrial applications 


Dimensions 


B1 B2 B3 D H L 1 L 2 L 3 

CNW 105/3 A 6,3 mm Faston spade 6,3 mm Faston spade 53 --- --- 5,3 40 110 100 90 

CNW 105/6 A 6,3 mm Faston spade 6,3 mm Faston spade 53 --- --- 5,3 40 110 100 90 

CNW 105/10 A 6,3 mmFaston spade 6,3 mm Faston spade 53 --- --- 5,3 40 110 100 90 

CNW 105/16 B Terminals 4mm 2 Earthing bolt (M5) 98 88 70 5,3 70 172 150 90 








H 

L3 

L2 

L1 

D 

B3 

B2 

B1 

55



Benefits 









- Frequency converters for motor drives, wind power 

installations and power supply units 



Type 

Rated voltage 

[V] 

Rated 

current [A] 


[mA] 


CNW 205/16 3x480 16



Benefits 








- Interference suppression of electronic devices 

in control panels 




Type 

Rated voltage 

[V] 

Rated 

current [A] 


[mA] 


CNW 525/3 3x440 4x3


Three phase mains filter, two-stage, three wire 

* 

Benefits 





• very high attenuation 

• useable for industrial and household applications 

• UL approval for CNW 104/6 



Type 

Rated voltage 

[V] 

Rated 

current [A] 


[mA] 


CNW 104/3 3x480 3x3



- Frequency converters for motor drives e.g. 

lifts, materials handling, pumps, ventilation and 

air-conditioning systems, industrial and 

household applications, wind power installations 

and power supply units 


Dimensions 


B1 B2 B3 D H L 1 L 2 L 3 

CNW 104/3 Terminals 4 mm 2 Earthing bolt (M5) 98 81 70 5,0 70 172 150 90 











H 

L3 

L2 

L1 

D 

L3 

L2 

L1 

H 

B3 

B2 

B1 

59



* 

Benefits 








• also possible as IT version 

• UL approval for CNW 204/7, 16, 30 und 42 A 



Type 

Rated voltage 

[V] 

Rated 

current [A] 


[mA] 


CNW 204/7 3x480 7






Dimensions 

Type Input Output Dimensions [mm] 

L1 L2 L3 L4 B1 B2 B2 H1 











L2 

ø 6,5 

B2 

B1 

L3 

Litzen 

H 

L4 

L1 

61



Benefits 









Type 

Rated voltage 

[V] 

Rated 

current [A] 


[mA] 


CNW 524/3 3x480 3x3




control panels, easy installation on top hat rail 

Dimensions 


L H B 

CNW 524/3 Terminals 4 mm 2 Terminals 4 mm 2 120 74 104 




H 

B 

L2 

L1 


63



Benefits 













Type 

Rated voltage 

[V] 

Rated current 

[A] 


[mA] 


CNW 207/5 3x480 5


Three phase mains filter, two-stage, four wire 

Benefits 













Type 

Rated voltage 

[V] 

Rated 

current [A] 


[mA] 


CNW 206/16 3x480 16


Three phase mains filter, two-stage, four wire 

Benefits 

• very high attenuation with low leakage current 


• general suppression of single and three phase consumers 


• Use in industrial and household applications 




Type 

Rated voltage 

[V] 

Rated 

current [A] 


[mA] 


CNW 106/3 3x440 4x3

L2 

L1 



- Power supply units for data systems engineering, 

telecommunications, medical equipment, 

industrial and household applications 


Dimensions 


B1 B2 B3 D H L 1 L 2 L 3 












H 

L3 

L2 

L1 

D 

H 

B3 

B2 

B1 

67


High-current mains filters 4 wires 

Benefits 

• for systems with no neutral line 


• bus bar connection 

• standard construction for all current ratings 

• reduced weight 

• quick mounting 



Type 

Rated voltage 

[V] 

Rated current 

[A] 


[mA] 

Cx [µF] Cy [nF] R [kΩ] 

CNW 108/280 3x440/480/690 3 x 280

Attenuation curve CNW 108/280 


- Suppression of frequency inverters, 

wind power installations, power electronics 

and general suppression for higher power 

ratings 

Dimensions 

Type Connection Dimensions [mm] 

A1 A2 B1 B2 B3 L 1 L 2 L 3 H1 H2 D1 D2 M 

CNW 108/280 30x5 15 15 360 330 300 630 476 400 170 75 9 11 12 

CNW 108/500 40x5 20 20 360 330 300 630 476 400 170 75 9 13 12 

CNW 108/700 40x10 20 20 360 330 300 630 476 400 170 75 9 13 12 


IT version also possible 

69

Filter combinations 

70

Filter combinations 


CNW 304, currents from 80 - 150 A................................... p. 74 - 75 

71


Filter combinations, single-stage 

Benefits 


• different connections (Terminals/cables /bars) 

• easy and fast istallation 

• damping of the harmonics 

• Attenuation of current harmonics 

• limintation of inrush currents 

• reduction of mains disturbance, current 

peaks and voltage drops 

• Increased life time for IGBT‘s 

• low noise 



Type 

Rated voltage 

[V] 

Rated current 

[A] 

Inductance 

[mH] 


[mA] 

Copper [kg] 

Weight [kg] 

CNW 307 / 3 up to 3x500 3 9,70



- Interference suppression of frequency converters 

with IGBT’s and reduction of harmonics PFC 

(Power Factor Correction) and commutation 

(current conduction between thyristors) with 

fast switching semiconductors. 

- Reducing of THD (Tolal Harmonic Distortion) 


Dimensions 

Type Options Connection Dimensions [mm] 

Terminals Cables L 1 L 2 L 3 B1 B2 H A1 A2 ∅ D 

Image 1 Image 2 

CNW307/3 4 mm 2 1,5 mm 2 167 153 136 90 60 175 1500 1000 7 

CNW307/6 4 mm 2 1,5 mm 2 167 153 136 90 60 175 1500 1000 7 

CNW307/10 4 mm 2 1,5 mm 2 167 153 136 90 60 175 1500 1000 7 

CNW307/16 6 mm 2 2,5 mm 2 207 193 176 90 60 175 1500 1000 7 

CNW307/25 6 mm 2 4,0 mm 2 307 293 276 90 60 175 1500 1000 7 

CNW307/36 10 mm 2 6,0 mm 2 307 293 276 90 60 175 1500 1000 7 

CNW307/50 16 mm 2 10 mm 2 387 373 356 90 60 175 1500 1000 7 


Design 1 

Bild 1 

H 

L1 

L2 

L3 

B1 

D 

B2 

Bild Design 2 2 

A1 

A2 

73


Filter combinations, single-stage 

Benefits 


• small footprint 

• reduction of cable looms in control panels 

• attenuation of higher harmonics 

• low hum vacuum impregnated choke 

• reduced start-up current 

• the choke is rated for a short-circuit voltage of 

4%, at rated current, as standard 



Type 

Rated voltage 

[V] 

Rated 

current [A] 


[mA] 

L [mH] Cx [µF] Cy [nF] Rx [k] Ry [k] 

CNW 304/80 3x400 80



- Interference suppression of frequency converters 

with IGBTs and reduction of harmonics 

(conforming to VDE 0160/EN 61800-3 class B). 


Type Connections Dimensions [mm] 

Terminals Earth L 1 L 2 L 3 B1 B2 H1 

CNW 304/80 50 mm 2 M10 330 315 290 190 120 216 

CNW 304/120 50 mm 2 M10 440 420 400 280 200 248 

CNW 304/150 50 mm 2 M10 440 420 400 280 200 248 


Unit must be mounted to allow 50 mm on all sides for adequate cooling. 

Design 1 

L3 

H 

L1 

D 

L2 

B2 B1 

Design 2 

A1 

A2 

75

DC-Filter 

76

DC-Filter 

CNW 173, currents from 25 - 1000 A................................. p. 78 - 79 

CNW 174, currents from 10 - 600 A................................... p. 80 - 81 

77


DC-Filter 

Benefits 

• protection of solar cells from high frequency 

noise generated by the inverter 

• Designed to conform to existing and planned 

standards, especially concerning DC circuits 

• Optional with current transformer 


• Low temperature rise 

• Universal protection for all inverters 

• Optional anti-surge protection 

Series REO CNW 173 - 

Design 2 from 600A 


Type Rated voltage [V] Rated current 

[A] 


[mA] 

Typical Inverter 

power 

[kW] 

Power loss 

[W] 

CNW 173/25 1000 V DC 25



- The DC-filter ensures a reduction of power 

quality issues in renewable applications like solar 

and wind power. 

Dimensions 

Type Connection Design Dimensions [mm] 

D 

L 1 L 2 L3 B1 B2 H1 H2 D1 D2 

PE 

CNW 173/25 Terminals 10mm² HV 1 282 265 H1 250 H2 54 25 81 50 7 - 

CNW 173/50 Terminals 10mm² HV 1 282 265 250 54 25 81 50 7 - 

CNW 173/75 Terminals 95mm² HV 1 310 280 255 140 120 125 - 7 - 

CNW 173/100 Terminals 95mm² HV 1 310 280 255 140 120 

L3 

125 

L2 

- 7 - 

CNW 173/150 Terminals 95mm² HV 1 310 280 255 140 120 L1125 - 7 - 

CNW 173/250 Bars 20x5 mm 1 310 280 255 140 120 125 - 7 9 

CNW 173/400 Bars 30x5 mm 1 310 280 255 140 120 125 - 7 9 

CNW 173/600 Bars 30x10 mm 2 470 375 B2 350 B1 140 120 120 - 7 10,5 

CNW 173/800 Bars 40x10 mm 2 470 375 350 140 120 120 - 7 10,5 

CNW 173/1000 Bars 40x10 mm 2 470 375 350 140 120 120 - 7 10,5 


Design 1 Design 2 

D 

PE 

øD1 

H1 

H2 

B2 

B1 

L3 

L2 

L1 

L3 

L2 

L1 

B2 

B1 

øD2 

H 

A1 

øD1 

B2 

B1 

79 

L3 

L2


DC-Filter 

Benefits 

• protection of solar cells from high frequency 

noise generated by the inverter 

• Designed to conform to existing and planned 

standards, especially concerning DC circuits 


• Low temperature rise 

• Universal protection for all inverters 

• Optional anti-surge protection 

Series REO CNW 174 - Design 1 

up to 150A 


Type 

Rated voltage 

[V] 

Rated 

current [A] 


[mA] 

Typical Inverter 

power 

[kW] 

Power loss 

[W] 

CNW 174/10 900 V DC 10

Circuit example 


- The DC-filter ensures a reduction of power 

quality issues in renewable applications like solar 

and wind power. 

Dimensions 

Type Connection Design Dimensions [mm] 

L 1 L 2 L3 B1 B2 H1 H2 D1 D2 

CNW 174/10 Plugs/Sockets MC3 / MC4 1 282 265 250 54 25 81 50 7 

D 

- 

Terminals 10mm² HV 

CNW 174/16 Plugs/Sockets MC3 / MC4 1 282 

H1 H2 

265 250 54 25 81 50 7 - 

Terminals 10mm² HV 

CNW 174/25 Terminals 10mm² HV 1 312 295 280 54 25 81 50 7 - 

CNW 174/50 Terminals 10mm² HV 1 312 295 280 54 25 L3 81 50 7 - 

L2 

CNW 174/80 Terminals 35mm² HV 1 405 380 300 140 120 L1120 - 7 - 



CNW 174/250 Bars 20x5 mm 2 470 400 B2 375 B1 140 120 120 - 7 10,5 

CNW 174/400 Bars 30x5 mm 2 470 400 375 140 120 120 - 7 10,5 

CNW 174/600 Bars 30x10 mm 2 470 400 375 140 120 120 - 7 10,5 


PE 

Design 1 Design 2 

D 

PE 

øD1 

H1 

H2 

B2 

B1 

L3 

L2 

L1 

L3 

L2 

L1 

B2 

B1 

øD2 

H 

A1 

øD1 

B2 

B1 

81

Multi-stage filter, surge protection 

82


CNW 141 - 145, currents from 30 - 400 A......................... p. 84 - 85 

CNW 147 - 154, currents from 16 - 400 A........................ p. 86 - 87 

PLC-Filter 

CNW 161,................................................................................... p. 88 

Surge protection 

CNW 703, currents 20000 A...................................................... p. 89 

CNW 721, currents 60 - 200 A................................................... p. 90 

Accessories 

Ferrite blocks............................................................................. p. 91 

83

REO CNW 141 - 146 


Benefits 

• For measuring systems 

• 5-stage 

• Up to> 100 dB at 10 MHz 

• Low thermal heating 


Type 

Rated voltage 

[V] 

Rated 

current [A] 


[mA] 

Type 

Rated voltage 

[V] 

Rated 

current [A] 


[mA] 

Single-stage 

Single-stage 

CNW 141/60 230 V 1 x 60

Typical Attenuation curve 

symmetrical 

assymetrical 


- Suppression of measurement laboratories 

high voltage test equipment, shielded rooms 

Dimensions 


Input Output L 1 L 2 B D H C 

CNW 141/60 M8 M8 940 915 229 10,5 127 102 

CNW 141/100 M10 M10 940 915 229 10,5 127 102 

CNW 141/150 M12 M12 1220 1190 355 10,5 152 155 

CNW 141/250 M14 M14 1220 1190 355 10,5 152 155 

CNW 141/400 M20 M20 1220 1190 355 10,5 152 155 

CNW 142/30 M8 M8 940 915 229 10,5 127 102 

CNW 142/60 M8 M8 940 915 229 10,5 127 102 

CNW 142/150 M12 M12 1220 1190 355 10,5 152 155 

CNW 142/200 M14 M14 1220 1190 355 10,5 152 155 

CNW 142/250 M14 M14 1220 1190 355 10,5 152 155 

CNW 142/400 M20 M20 1220 1190 355 10,5 152 155 

CNW 143/16 M6 M6 940 915 229 10,5 127 102 

CNW 143/30 M8 M8 940 915 229 10,5 127 102 

CNW 143/50 M8 M8 1220 1190 355 10,5 152 155 

CNW 143/100 M12 M12 1220 1190 355 10,5 152 155 

CNW 143/150 M12 M12 1220 1190 355 10,5 152 155 

CNW 143/200 M14 M14 1220 1190 355 10,5 152 155 



CNW 144/60 M8 M8 940 915 229 10,5 127 102 

CNW 144/100 M10 M10 940 915 229 10,5 127 102 

CNW 144/150 M12 M12 1220 1190 355 10,5 152 155 

CNW 144/250 M14 M14 1220 1190 355 10,5 152 155 

CNW 144/400 M20 M20 1220 1190 355 10,5 152 155 

CNW 145/30 M8 M8 940 915 229 10,5 127 102 

CNW 145/60 M8 M8 940 915 229 10,5 127 102 

CNW 145/150 M12 M12 1220 1190 355 10,5 152 155 

CNW 145/200 M14 M14 1220 1190 355 10,5 152 155 

CNW 145/250 M14 M14 1220 1190 355 10,5 152 155 

CNW 145/400 M20 M20 1220 1190 355 10,5 152 155 

CNW 146/16 M6 M6 940 915 229 10,5 127 102 

CNW 146/30 M8 M8 940 915 229 10,5 127 102 

CNW 146/50 M8 M8 1220 1190 355 10,5 152 155 

CNW 146/100 M12 M12 1220 1190 355 10,5 152 155 

CNW 146/150 M12 M12 1220 1190 355 10,5 152 155 

REO CNW 144 - CNW 145 - CNW 146 REO CNW 141 - CNW 142 - CNW 143 

85

REO CNW 147 - 154 


Benefits 

• For measuring systems 

• 5-stage 

• Up> 100 dB at 10 MHz 

• Low thermal heating 


Type 

Rated voltage 

[V] 

Rated 

current [A] 


[mA] 

Einleiter 

CNW 147/60 580 V 1 x 60


symmetrical 

assymetrical 


- Suppression of measurement laboratories, 

high voltage test equipment, shielded rooms 

Dimensions 



CNW 147/60 M8 M8 940 915 229 10,5 127 102 

CNW 147/100 M10 M10 940 915 229 10,5 127 102 

CNW 147/150 M12 M12 1220 1190 355 10,5 152 155 

CNW 147/250 M14 M14 1220 1190 355 10,5 152 155 

CNW 147/400 M20 M20 1220 1190 355 10,5 152 155 

CNW 148/30 M8 M8 940 915 229 10,5 127 102 

CNW 148/60 M8 M8 940 915 229 10,5 127 102 

CNW 148/150 M12 M12 1220 1190 355 10,5 152 155 

CNW 148/200 M14 M14 1220 1190 355 10,5 152 155 

CNW 148/250 M14 M14 1220 1190 355 10,5 152 155 

CNW 149/16 M6 M6 940 915 229 10,5 127 102 

CNW 149/30 M8 M8 940 915 229 10,5 127 102 

CNW 149/50 M8 M8 1220 1190 355 10,5 152 155 

CNW 149/100 M12 M12 1220 1190 355 10,5 152 155 



CNW 154 / 16 M6 M6 940 915 229 10,5 127 102 

CNW 154 / 25 M6 M6 940 915 229 10,5 127 102 

CNW 154 / 36 M6 M6 940 915 229 10,5 127 102 

CNW 154 / 63 M8 M8 1220 1190 355 10,5 152 155 

REO CNW 154 REO CNW 147 - CNW 148 - CNW 149 

87


PLC-Filter 

Benefits 

• Rated current of 16 A 

• Limits the signal propagation 

• Avoids undesirable signal attenuation 

due to network or device 


• Power Line Communication (PLC) 

for decoupling of signals 



Type 

Rated voltage 

[V] 

Rated 

current [A] 

Leakage 

current 

[mA] 

Cx [µF] Cy [nF] L [mH] R [MOhm] 

CNW 161/16 250 16


Transient suppression for switchboard plants 

Benefits 

• Easy to fit into existing plant 

• EMC attenuation for industrial applications is often achieved 

• Reduced cable runs in control panels 

• Symmetrical conduction voltages are 

maintained by using parallel connected varistors 

• Connection without an earth conductor is possible (e.g. frequency drives) 

• Phase connected LED‘s provide input voltage monitoring 


- Protection device for easy installation into new or existing equipment 

- Efficient protection against high voltages, lightning strikes and transients 

- Attenuation of interference down to approximately 50 dB at 1 MHz 



Type 

Rated voltage 

[V] 

Surge 

current [kA] 

Leakage 

current 

[mA] 

Cx [µF] Cy [nF] R [kOhm] 

CNW 703/20 3 x 480 3 x 20


Transient Suppression with filter 

Benefits 

• quick and easy installation 

• small footprint 

• multi-stage protection 

• wide area discharge to earth 

• combination: dischargers + varistors 

• good EMC filtering 


- Protection devices for easy installation into new and 

existing equipment 

- Efficient protection against high voltages caused by 

switching, lightning and transients 



Type 

Rated voltage 

[V] 

Rated 

current [A] 

Surge current 

[kA] 


[mA] 

Cx [µF] Cy [nF] L 1[mH] 

CNW 721/6 250/400 6 30 < 30 55 110 150 

CNW 721/10 250/400 10 30 < 30 55 110 150 

CNW 721/16 250/400 16 30 < 30 55 110 100 

CNW 721/20 250/400 20 30 < 30 55 110 100 


Dimensions 


B1 B2 B3 H1 L1 L2 L3 

CNW 721/6 Terminals 4 mm² M5 175 72,5 5 80 112 97 90 






90

Accessories 

Ferrite blocks 


Technical data ferrite blocks 

Type 

Rated 

current [A] 

inductance 

[mH] 

FB 60/60/25 4 0,012 

at 20°C 

10 kHz / 

50mV 

inductance tolerance 

Ambient temperature 

[°C] 

Engine power 

[kW] 

+ 50%, -30% 40°C 2,2 

REO FB 60 

68 

60 

54 

45 

ø20,20 

ø4,3x6,0 

ø4,30 

5,50 

55 

45 

26 

13 

Other accessories - such as ferrite 

sleeves - on request. 

Please contact us! 

91

Guideline to your EMC-Filter 

Guideline to your EMC-Filter 

Can’t find what you are looking for? 

No problem! 

Simply complete the guideline below, 

tear it off and send it by e-mail or fax to: 

info@reo.de - +49 (0) 33971 - 485 90 

Type______________ 

Application 

0 converter 0 thyristor controller 0 shielded cabin 

0 servo drive 0 spec. electronic application _____________________ 

Technical parameters 

Conductors 0 double conductor 0 triple conductor 0 quad conductor 

Connections (Input - Output) 0 terminals-terminals 0 terminals - cables 0 bars - bars 

0 cables - cables 0 cables - terminals 0 _____________________ 

Rated Voltage* U Nenn 

= 

_______ / _______ V 

Rated current* I Nenn 

= _______ A 

Frequency* f = _______ Hz 

Leakage current* I Abl 

< _______ mA 

Environment 0 Industry 0 Railway 0 _____________________ 

Ambient temperature T U 

= _____________________ °C 

Desired attenuation* 0_______ dB @ 150 KHz 0_______ dB @ 1 MHz 0 _______ dB @ bis 30 MHz 

Measured attenuation curve 0 yes, attached 0 no 

Mechanical parameters 

Dimensions 

Length: L1 = _______ mm Width: B1 = Height: H = _______ mm 

0 guiding values 

0 to be adhered 

_______ mm 

Fixing dimensions Length: L2 = _______ mm Width: B2 = _______ mm 

Design 0 Book-Style 0 footprint 0 Standard 0 _________ 

Other details (e.g. Test criteria, test voltage, standards, UL, fixings, cooling, mech. requirements ) 

Requirements planning 

(e.g. Specimen, Test series, series, quantities) 

Company 

Date 

Contact person (tech.) (purchase) Dept. 

City 

Postal code 

Adress 

Phone 

Fax 

Internet 

E-Mail 

92

Worldwide distribution 

• REO Unity 

• REO at your side 

• REO Service 

REO Service 

• From the simulation model to 

mature end product 

• Taking into account international 

certifications and standards 

• Verification of all technical 

parameters, long-term measurements 

• Documentations and tests 

with all products 

REO Unity 

• All from one single source : 

Components in and around the 

frequency converter - as stand-alone 

products or designed as a complete system 

(including housing, fan, etc.) 

• Customized solutions 

REO at your side 

• Certified production processes 

• 1:1 production transfer 

• Same test and production 

equipment 

Worldwide Sales Network 

With a worldwide sales network and comprehensive product portfolio, REO can react rapidly to your wishes anywhere in the 

world - no matter what language you speak. Besides our wide selection of standard products, we can of course offer you tailor-made 

solutions, developed specially to meet your wishes. Our production facilities in China, India and the USA are equipped in exactly the same 

way as those in Germany, and designed to provide the same product at the same quality. 

Using the same software and with with development and design in Germany we ensure that REO products are always up to the latest state 

of the art. 

Wherever you are, even after the 1000th production run, a REO product always has the same quality. 

93

Notes 

94

95

Holzhausener Straße 52 

D-16866 Kyritz 

Tel.: +49 (0)33971 485 0 

Fax: +49 (0)33971 485 90 

E-Mail: info@reo.de 

Internet: www.reo.de 

Headquarter: 

REO INDUCTIVE COMPONENTS AG 

Brühler Straße 100 · D-42657 Solingen 

Tel.: +49 (0)212 8804 0 · Fax: +49 (0)212 8804 188 

E-Mail: info@reo.de 

Internet: www.reo.de 

China 

REO Shanghai Inductive Components Co., Ltd 

No. 536 ShangFeng Road · Pudong, 201201 Shanghai · China 

Tel.: +86 (0)21 5858 0686 · Fax: +86 (0)21 5858 0289 

E-Mail: info@reo.cn · Internet: www.reo.cn 

France 

REO VARIAC S.A.R.L. 

ZAC Du Clos aux Pois 1 · 6/8 rue de la Closerie-LISSES· F-91048 Evry Cédex 

Tel.: +33 (0)1 6911 1898 · Fax: +33 (0)1 6911 0918 

E-Mail: reovariac@reo.fr · Internet: www.reo.fr 

Great Britain 

REO (UK) Ltd. 

Units 2-4 Callow Hill Road · Craven Arms · Shropshire SY7 8NT · UK 

Tel.: +44 (0)1588 673 411 · Fax: +44 (0)1588 672 718 

E-Mail: main@reo.co.uk · Internet: www.reo.co.uk 

India 

REO GPD INDUCTIVE COMPONENTS PVT. LTD 

2/202 Luna Road · Village Luna · Taluka Padra 

Vadodara - 391440 · India 

Tel.: +91 (2662) 221723, +91 (265) 2396148 · Fax: +91 (265) 2396971 

E-Mail: info@reogpd.com · Internet: www.reo-ag.in 

Italy 

REO ITALIA S.r.l. 

Via Treponti, 29 · I-25086 Rezzato (BS) 

Tel.: +39 030 279 3883 · Fax: +39 030 279 0600 

E-Mail: info@reoitalia.it · Internet: www.reoitalia.it 

Poland 

REO CROMA Sp.zo.o 

ul. Pozaryskiego 28, bud 20 · PL-04-703 Warszawa 

Tel.: +48 (0)22 812 3066 · Fax: +48 (0)22 815 6906 

E-Mail: croma@croma.com.pl · Internet: www.croma.com.pl 

Version 1_27.10.14_EN_1 

Spain 

REO ESPAÑA 2002 S.A. 

C/Manuel Ventura i Campeny 21B · local 9 · E-08339 Vilassar de Dalt (Barcelona) 

Tel.: +34 937 509 994 · Fax: +34 937 509 995 

E-Mail: info@reospain.com · Internet: www.reospain.com 

Switzerland 

REO ELEKTRONIK AG 

Im Halbiacker 5a · CH-8352 Elsau 

Tel.: +41 (0)52 363 2820 · Fax: +41 (0)52 363 1241 

E-Mail: info@reo.ch · Internet: www.reo.ch 

Turkey 

REOTURKEY ELEKTRONIK San. ve Tic. Ltd. Şti. 

Halil Rıfatpasa Mah. · Darülceze CD Perpa Tic Merkezi 

B Blok Kat 8 No:1095 · TR-34384 Sisli – Istanbul 

Tel.: +90 (0)212 2215 118 · Fax: +90 (0)212 2215 119 

E-Mail: info@reo-turkey.com · Internet: www.reo-turkey.com 

USA 

REO-USA, Inc. 

8450 E. 47th St · USA-Indianapolis, IN 46226 

Tel.: +1 (317) 899 1395 · Fax: +1 (317) 899 1396 

E-Mail: info@reo-usa.com · Internet: www.reo-usa.com

REO EMC-Filters

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