New Products

DEHNguard ® modular
DEHNguard M TNC ... FM
Type 2 Surge Arresters
L1 L2 L3
30
L1 L2 L3
12
11
14
90
45
PEN
54 7
(3 mods.)
43.5
66
9
PEN
15.3
9
11
• Prewired complete unit consisting of a
base part and plug-in protection modules
• High discharge capacity due to heavyduty
zinc oxide varistors/spark gaps
• High reliability due to "Thermo Dynamic
Control" SPD monitoring device
Basic circuit diagram DG M TNC ... FM
Dimension drawing DG M TNC ... FM
Modular surge arrester for use in TN-C systems; with floating changeover contact
Surge Arresters Type 2
Type DG M TNC 150 FM DG M TNC 275 FM DG M TNC 385 FM DG M TNC 440 FM
Part No. 952 318 952 305 952 319 952 308
SPD according to EN 61643-11 Type 2 Type 2 Type 2 Type 2
SPD according to IEC 61643-1/-11 Class II Class II Class II Class II
Nominal a.c. voltage (U N ) 120/240 V 230/400 V 230/400 V 400/690 V
Max. continuous operating a.c. voltage (U C ) 150 V 275 V 385 V 440 V
Nominal discharge current (8/20 μs) (I n ) 15 kA 20 kA 20 kA 20 kA
Max. discharge current (8/20 μs) (I max ) 40 kA 40 kA 40 kA 40 kA
Voltage protection level (U P ) ≤ 0.7 kV ≤ 1.25 kV ≤ 1.75 kV ≤ 2 kV
Voltage protection level at 5 kA (U P ) ≤ 0.55 kV ≤ 1 kV ≤ 1.35 kV ≤ 1.7 kV
Response time (t A ) ≤ 25 ns ≤ 25 ns ≤ 25 ns ≤ 25 ns
Max. mains-side overcurrent protection 125 A gL/gG 125 A gL/gG 125 A gL/gG 125 A gL/gG
Short-circuit withstand capability for max.
mains-side overcurrent protection 50 kA rms 50 kA rms 25 kA rms 25 kA rms
Temporary overvoltage (TOV) (U T ) 175 V / 5 sec. 335 V / 5 sec. 385 V / 5 sec. 580 V / 5 sec.
TOV characteristics withstand withstand withstand withstand
Operating temperature range (T U ) -40°C...+80°C -40°C...+80°C -40°C...+80°C -40°C...+80°C
Operating state/fault indication green / red green / red green / red green / red
Number of ports 1 1 1 1
Cross-sectional area (min.)
1.5 mm 2 solid/flexible
Cross-sectional area (max.)
35 mm 2 stranded/25 mm 2 flexible
For mounting on 35 mm DIN rail acc. to EN 60715
Enclosure material thermoplastic, red, UL 94 V-0
Place of installation indoor installation indoor installation indoor installation indoor installation
Degree of protection IP 20 IP 20 IP 20 IP 20
Capacity 3 modules, DIN 43880 3 modules, DIN 43880 3 modules, DIN 43880 3 modules, DIN 43880
Approvals KEMA, UL KEMA, VDE, UL, VdS KEMA, UL KEMA, UL, VdS
Type of remote signalling contact changeover contact changeover contact changeover contact changeover contact
a.c. switching capacity 250 V/0.5 A 250 V/0.5 A 250 V/0.5 A 250 V/0.5 A
d.c. switching capacity
250 V/0.1 A; 125 V/0.2 A; 75 V/0.5 A
Cross-sectional area for remote signalling terminals
max. 1.5 mm 2 solid/flexible
952 318
DG M TNC 150 FM
952 305
DG M TNC 275 FM
952 319
DG M TNC 385 FM
DG 952 M 308 TNC 150 FM
952 DG M 318 TNC 440 FM
Überspannungsableiter Typ 2 DEHNguard M 3-polig für TN-C-Systeme
DG M TNC 275 FM
952 305
Überspannungsableiter Typ 2 DEHNguard M 3-polig für TN-C-Systeme
DG M TNC 385 FM
952 319
Überspannungsableiter Typ 2 DEHNguard M 3-polig für TN-C-Systeme
DG M TNC 440 FM
952 308
Überspannungsableiter Typ 2 DEHNguard M 3-polig für TN-C-Systeme
Accessory for DEHNguard ® modular
Varistor-Based Protection Module
Varistor-based protection module for DEHNguard M ...
and DEHNguard S ... surge arresters
Type DG MOD ... 150 275 385 440
Part No. 952 012 952 010 952 014 952 015
Max. continuous operating
a.c. voltage (U C ) 150 V 275 V 385 V 440 V
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