New Products

Type 2 Surge Arresters
DEHNguard ® modular with integrated Backup Fuse
DEHNguard M TN CI ... (FM)
30
L
N
L
N
90
45
12
11
14
36 7
(2 mods.)
PE
43.5
66
15.3
9
11
9 PE
Dimension drawing DG M TN CI ... FM
Basic circuit diagram DG M TN CI ... FM
Modular surge arrester with integrated backup fuses for single-phase 230 V TN systems
• Arrester backup fuse integrated in the
protection module
• Prewired complete unit consisting of a
base part and plug-in protection modules
• High reliability due to "Thermo Dynamic
Control" SPD monitoring device
952 173
DG M TN CI 275
952 178
DG M TN CI 275 FM
DG M TN CI 275
952 173
Überspannungsableiter Typ 2 DEHNguard M für einphasige TN-Systeme
DG M TN CI 275 FM
952 178
Überspannungsableiter Typ 2 DEHNguard M für einphasige TN-Systeme
Type DG M TN CI 275 DG M TN CI 275 FM
Part No. 952 173 952 178
SPD according to EN 61643-11 Type 2 Type 2
SPD according to IEC 61643-1/-11 Class II Class II
Nominal a.c. voltage (U N ) 230 V 230 V
Max. continuous operating a.c. voltage (U C ) 275 V 275 V
Nominal discharge current (8/20 μs) (I n ) 12.5 kA 12.5 kA
Max. discharge current (8/20 μs) (I max ) 25 kA 25 kA
Voltage protection level (U P ) ≤ 1.5 kV ≤ 1.5 kV
Voltage protection level at 5 kA (U P ) ≤ 1 kV ≤ 1 kV
Response time (t A ) ≤ 25 ns ≤ 25 ns
Max. mains-side overcurrent protection not required not required
Short-circuit withstand capability 25 kA rms 25 kA rms
Temporary overvoltage (TOV) (U T ) 335 V / 5 sec. 335 V / 5 sec.
TOV characteristics withstand withstand
Operating temperature range (T U ) -40°C...+80°C -40°C...+80°C
Operating state/fault indication green / red green / red
Number of ports 1 1
Cross-sectional area (min.) 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
For mounting on 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
Place of installation indoor installation indoor installation
Degree of protection IP 20 IP 20
Capacity 2 modules, DIN 43880 2 modules, DIN 43880
Approvals KEMA, VDE KEMA, VDE
Type of remote signalling contact –– changeover contact
a.c. switching capacity –– 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
Surge Arresters Type 2
Accessory for DEHNguard ® modular with integrated
Backup Fuse
Varistor-Based Protection Module
for N-PE circuits
Varistor-base protection module for DEHNguard M ...
and DEHNguard S ...
Type DG MOD 275
Part No. 952 010
Max. continuous operating a.c. voltage (U C ) 275 V
Accessory for DEHNguard ® modular with integrated
Backup Fuse
Varistor-Based Protection Module for
DEHNguard M CI
Protection module for DEHNguard M ... CI 275 arresters
comprising a varistor connected in series with the integrated
backup fuse
Type DG MOD CI 275
Part No. 952 020
Max. continuous operating a.c. voltage (U C ) 275 V
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