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Power supply The a.c. voltage supply of fire and burglar alarm systems
places especially high demands on surge protective devices.
DEHNguard and DEHNrail which have a high discharge ca-
®
pacity due to their zinc oxide varistors meet these demands
and ensure safe system operation. The fact that our surge
protective devices are VdS-certified contributes to the high
quality of our products.

DEHNguard ® Type Part No.
The modular two-pole type 2 surge DG M TN 275 FM* 952 205
arrester for single-phase TN systems
consists of a base part and plug-in pro-
tection module with floating changeo-
ver contact.**

DEHNrail Type Part No.

The two-pole type 3 surge arrester DR M 2P 255 FM* 953 205
consists of a base part and plug-in
protection module with floating chan-
geover contact.**

* FM = floating changeover contact
** VdS-certified
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