New Products

DEHNguard ® modular with integrated Backup Fuse
DEHNguard M TNC CI ... (FM)
L1 L2 L3
Type 2 Surge Arresters
30
L1 L2 L3
12
11
14
90
45
PEN
54 7
(3 mods.)
43.5
66
9
PEN
15.3
9
11
• 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
Basic circuit diagram DG M TNC CI ... FM
Modular surge arrester with integrated backup fuses for TN-C systems
Dimension drawing DG M TNC CI ... FM
Surge Arresters Type 2
Type DG M TNC CI 275 DG M TNC CI 275 FM
Part No. 952 304 952 309
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 ) 230/400 V 230/400 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 installation
Degree of protection IP 20 IP 20
Capacity 3 modules, DIN 43880 3 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
952 304
DG M TNC CI 275
952 309
DG M TNC CI 275 FM
DG M TNC CI 275
952 304
Überspannungsableiter Typ 2 DEHNguard M 3-polig für TN-C-Systeme
DG M TNC CI 275 FM
952 309
Überspannungsableiter Typ 2 DEHNguard M 3-polig für TN-C-Systeme
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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