New Products

DEHNguard ® modular
DEHNguard M TNS ... FM
Type 2 Surge Arresters
L1
L2
L3
N
30
L1 L2 L3 N
12
11
14
90
45
72
(4 mods.)
PE
7
43.5
66
• 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
9 PE
Basic circuit diagram DG M TNS ... FM
Dimension drawing DG M TNS ... FM
Modular surge arrester for use in TN-S systems; with floating changeover contact
15.3
9
11
Surge Arresters Type 2
Type DG M TNS 150 FM DG M TNS 275 FM DG M TNS 385 FM
Part No. 952 408 952 405 952 409
SPD according to EN 61643-11 Type 2 Type 2 Type 2
SPD according to IEC 61643-1/-11 Class II Class II Class II
Nominal a.c. voltage (U N ) 120/240 V 230/400 V 230/400 V
Max. continuous operating a.c. voltage (U C ) 150 V 275 V 385 V
Nominal discharge current (8/20 μs) (I n ) 15 kA 20 kA 20 kA
Max. discharge current (8/20 μs) (I max ) 40 kA 40 kA 40 kA
Voltage protection level (U P ) ≤ 0.7 kV ≤ 1.25 kV ≤ 1.75 kV
Voltage protection level at 5 kA (U P ) ≤ 0.55 kV ≤ 1 kV ≤ 1.35 kV
Response time (t A ) ≤ 25 ns ≤ 25 ns ≤ 25 ns
Max. mains-side overcurrent protection 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
Temporary overvoltage (TOV) (U T ) 175 V / 5 sec. 335 V / 5 sec. 385 V / 5 sec.
TOV characteristics withstand withstand withstand
Operating temperature range (T U ) -40°C...+80°C -40°C...+80°C -40°C...+80°C
Operating state/fault indication green / red green / red green / red
Number of ports 1 1 1
Cross-sectional area (min.) 1.5 mm 2 solid/flexible 1.5 mm 2 solid/flexible 1.5 mm 2 solid/flexible
Cross-sectional area (max.) 35 mm 2 stranded/25 mm 2 flexible 35 mm 2 stranded/25 mm 2 flexible 35 mm 2 stranded/25 mm 2 flexible
For mounting on 35 mm DIN rail acc. to EN 60715 35 mm DIN rail acc. to EN 60715 35 mm DIN rail acc. to EN 60715
Enclosure material thermoplastic, red, UL 94 V-0 thermoplastic, red, UL 94 V-0 thermoplastic, red, UL 94 V-0
Place of installation indoor installation indoor installation indoor installation
Degree of protection IP 20 IP 20 IP 20
Capacity 4 modules, DIN 43880 4 modules, DIN 43880 4 modules, DIN 43880
Approvals KEMA, UL KEMA, VDE, UL, VdS KEMA, UL
Type of remote signalling 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
d.c. switching capacity 250 V/0.1 A; 125 V/0.2 A; 250 V/0.1 A; 125 V/0.2 A; 250 V/0.1 A; 125 V/0.2 A;
75 V/0.5 A 75 V/0.5 A 75 V/0.5 A
Cross-sectional area for remote signalling terminals max. 1.5 mm 2 solid/flexible max. 1.5 mm 2 solid/flexible max. 1.5 mm 2 solid/flexible
952 408
DG M TNS 150 FM
952 405
DG M TNS 275 FM
952 409
DG M TNS 385 FM
DG M TNS 150 FM
952 408
Überspannungsableiter Typ 2 DEHNguard M 4-polig für TN-S-Systeme
DG M TNS 275 FM
952 405
Überspannungsableiter Typ 2 DEHNguard M 4-polig für TN-S-Systeme
DG M TNS 385 FM
952 409
Überspannungsableiter Typ 2 DEHNguard M 4-polig für TN-S-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
Part No. 952 012 952 010 952 014
Max. continuous operating
a.c. voltage (U C ) 150 V 275 V 385 V
88 www.dehn.de