The DEHNguard SU/MU product family are Type 2 surge protection devices (SPD) that are designed for all common North American electrical power systems. These SPDs, from DEHN, are UL 1449 4^rd edition approved with a 200 kA SCCR rating and do not need any additional over-current protection.

Varistor Based Protection Modules

Varistor based protection module for DEHNguard M, DEHNguard S, DEHNgap C S surge arresters.

• high discharge capacity due to heavy-duty zinc oxide varistors / spark gaps
• easy replacement of protection modules without tools due to module locking system with module release button
• the plug-in protection module can be replaced without switching off the mains voltage and without removing the distribution board cover

952011 – DG MOD 75

• Nominal Discharge Current (8/20 μs) (In): 10 kA
• Maximum Discharge Current (8/20 μs) (Imax): 40 kA
• Maximum Continuous Operating Voltage (AC) (UC): 55 V

952013 – DG MOD 320

• Nominal Discharge Current (8/20 μs) (In): 20 kA
• Maximum Discharge Current (8/20 μs) (Imax): 40 kA
• Maximum Continuous Operating Voltage (AC) (UC): 320 V

952014 – DG MOD 385

• Nominal Discharge Current (8/20 μs) (In): 20 kA
• Maximum Discharge Current (8/20 μs) (Imax): 40 kA
• Maximum Continuous Operating Voltage (AC) (UC): 385 V

DEHNguard S

Pluggable single-pole surge arrester consisting of a base part and a plug-in protection module.

• multipurpose surge arrester consisting of a base part and a plug-in protection module
• high discharge capacity due to heavy-duty zinc oxide varistor
• high reliability due to “Thermo Dynamic Control” SPD monitoring device
• energy coordination with other arresters of the Red/Line product family
• operating state, fault indication by green, red indicator flag in the inspection window
• narrow (modular) design according to DIN 43880
• multifunctional terminals for connecting conductors and busbars
• easy replacement of protection modules due to module locking system with module release button
• vibration and shock-tested according to EN 60068-2

952070 – DG S 275

Pluggable single-pole surge arrester consisting of a base part and a plug-in protection module.

• Nominal Voltage (AC) (UN): 230 V (50 / 60 Hz)
• Maximum Continuous Operating Voltage (AC) (UC): 275V (50 / 60 Hz)
• Maximum Continuous Operating Voltage (DC) (UC): 350 V

952072 – DG S 150

Pluggable single-pole surge arrester consisting of a base part and a plug-in protection module.

• Nominal Voltage (AC) (UN): 120 V (50 / 60 Hz)
• Maximum Continuous Operating Voltage (AC) (UC): 150V (50 / 60 Hz)
• Maximum Continuous Operating Voltage (DC) (UC): 200 V

952090 – DG S 275 FM

Pluggable single-pole surge arrester consisting of a base part and a plug-in protection module with floating remote signaling contact.

• Nominal Voltage (AC) (UN): 230 V (50 / 60 Hz)
• Maximum Continuous Operating Voltage (AC) (UC): 275V (50 / 60 Hz)
• Maximum Continuous Operating Voltage (DC) (UC): 350 V

952091 – DG S 75 FM

Pluggable single-pole surge arrester consisting of a base part and a plug-in protection module; with floating remote signaling contact.

• Nominal Voltage (AC) (UN): 60 V (50 / 60 Hz)
• Maximum Continuous Operating Voltage (AC) (UC): 75V (50 / 60 Hz)
• Maximum Continuous Operating Voltage (DC) (UC): 100 V

952092 – DG S 150 FM

Pluggable single-pole surge arrester consisting of a base part and a plug-in protection module with floating remote signaling contact.

• Nominal Voltage (AC) (UN): 120 V (50 / 60 Hz)
• Maximum Continuous Operating Voltage (AC) (UC): 150V (50 / 60 Hz)
• Maximum Continuous Operating Voltage (DC) (UC): 200 V

DEHNguard Modular

• prewired complete unit consisting of a base part and plug-in protection modules
• no additional surge protection devices required
• short-circuit current rating (SCCR) 200 kA
• ANSI/UL 1449 open-type 1 SPD
• high discharge capacity due to heavy-duty zinc oxide varistors (Imax 50 kA 8×20μs)
• high device reliability due to “Thermo Dynamic Control” arrester monitoring

908341 –  DG MU 3PY 480 4W+G

DIN rail mount, pluggable surge arrester consisting of a base part and plug-in protection modules for application in 3 Phase Wye Systems.

• prewired complete unit without the need for additional surge protective devices