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For protecting low-voltage consumer installations against surges and even direct lightning strikes. For installation in conformity with the lightning protection zone concept at the boundaries from 0_A– 1.
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DEHNbloc modular

Coordinated spark-gap-based lightning current arrester consisting of a base part and a plug-in protection module
Maximum system availability due to RADAX Flow follow current limitation
No tripping of 32 A gG fuses up to short-circuit currents of 50 kA_rms
Discharge capacity up to 50 kA (10/350 µs)
Directly coordinated with DEHNguard surge protective devices without additional cable length
Low voltage protection level
Operating state / fault indication by green / red indicator flag in the inspection window
Easy replacement of protection modules without tools due to module locking system with module release button

DEHNbloc M 1 ...

Coordinated and modular single-pole lightning current arrester with high follow current limitation.

Art.-Nr. 961110

DB M 1 150

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DEHNbloc M 1 ...

Coordinated and modular single-pole ightning current arrester with high follow current limitation.

Art.-Nr. 961120

DB M 1 255

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Technical data
SPD according to EN 61643-11 / IEC 61643-11	type 1 / class I
Max. continuous operating voltage (AC) (U_C)	255 V (50 / 60 Hz)
Lightning impulse current (10/350 µs) (I_imp)	50 kA
Voltage protection level (U_P)	≤ 2.5 kV
Max. backup fuse (L) up to I_K= 50 kA_rms(t_a≤ 0.2 s)	500 A gG
Max. backup fuse (L) up to I_K= 50 kA_eff(t_a≤ 5 s)	315 A gG
Approvals	VDE, KEMA, UL
Extended technical data
Supplementary data

DEHNbloc M 1 ...

Coordinated and modular single-pole lightning current arrester with high follow current limitation.

Art.-Nr. 961130

DB M 1 320

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DEHNbloc M 1 ... FM

Coordinated and modular single-pole lightning current arrester with high follow current limitation; with remote signalling contact for the monitoring system (floating changeover contact).

Art.-Nr. 961115

DB M 1 150 FM

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DEHNbloc M 1 ... FM

Coordinated and modular single-pole lightning current arrester with high follow current limitation; with remote signalling contact for the monitoring system (floating changeover contact).

Art.-Nr. 961125

DB M 1 255 FM

item

Technical data
SPD according to EN 61643-11 / IEC 61643-11	type 1 / class I
Max. continuous operating voltage (AC) (U_C)	255 V (50 / 60 Hz)
Lightning impulse current (10/350 µs) (I_imp)	50 kA
Voltage protection level (U_P)	≤ 2.5 kV
Max. backup fuse (L) up to I_K= 50 kA_rms(t_a≤ 0.2 s)	500 A gG
Max. backup fuse (L) up to I_K= 50 kA_eff(t_a≤ 5 s)	315 A gG
Approvals	VDE, KEMA, UL
Extended technical data
Supplementary data

DEHNbloc M 1 ... FM

Coordinated and modular single-pole lightning current arrester with high follow current limitation; with remote signalling contact for the monitoring system (floating changeover contact).

Art.-Nr. 961135

DB M 1 320 FM

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