DEHN 952 094 Surge Arrestor Guide De Spécification

Page de 3
POWER SUPPLY SYSTEMS
SURGE ARRESTERS – TYPE 2
1
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Accessories
Surge Arresters – 
Type 3
Surge Arresters – 
Type 2
N-PE Lightning Current
Arresters – Type 1
Lightning Current
Arresters – Type 1
Combined 
Arresters – Type 1
DEHNguard
®
S / DEHNguard
®
S FM
Single-pole pluggable Surge Arrester
SPD Type 2 according to EN 61643-11 
SPD Class II according to IEC 61643-1 
• Surge arrester for universal use, consist-
ing of a base part and plug-in protec-
tive component
• High discharge capacity due to power-
ful zinc oxide varistor
• High reliability due to “Thermo
Dynamic Control” SPD monitoring
device
• Energy-coordinated within the Red/Line
product family
• Operating state/fault indication by mark
in the inspection window
• Small (modular) design according to
DIN 43880
• Multifunctional terminals for connec-
tion of conductors and busbars
• Easy exchange of protection modules
with module releasing button
DEHNguard S ...:
Pluggable surge arrester, consisting of a base part and plug-in protection module 
DEHNguard S ... FM: With remote signalling contact for monitoring device (floating changeover contact)
For protection of low-voltage consumer´s installations against surges.
For use in the lightning protection zones concept at boundaries 0
B
– 1
and higher.
The universal features characterise the single-pole devices of the
DEHNguard S product family. Whether as a single device or in combina-
tion with other devices – the  DEHNguard S surge arresters always ensure
a proper protective circuit. The modern Red/Line family design and its uni-
versal features ensure safety and easy application for the user. The mod-
ule releasing button also characterises the devices of the DEHNguard S
series, like the approved Thermo Dynamic Control SPD monitoring device
with dual tripping performance.
Experience of decades with the application of surge arresters worldwide
has further improved the latest DEHNguard generation compared to the
previous types.
The module locking system, which is unique for surge protective devices,
fixes the protection modules to the base part. Neither vibrations during
transport nor the enourmous forces of currents during discharges can
loosen the protection modules. And still, the modules can be easily
exchanged without tools, if necessary. This is ensured by the user-friendly
releasing button of the protection modules.
In order to avoid a wrong supplying by the installer or user when
exchanging the protection modules, every base part and protection mod-
ule has a mechanical coding set by the manufacturer.
Like with all DEHNguard surge arresters, the users of DEHNguard S can
rely on the dual monitoring device Thermo Dynamic Control. This provides
maximum safety of the devices, even under unfavourable environmental
conditions. Readiness for operation of DEHNguard S is indicated by the
visual indicator with green and red marks. Apart from the standard visual
indicator, DEHNguard S ... FM has a 3-pole terminal for remote signalling.
With the remote signalling contact, being a floating changeover contact,
the remote signal can be used as a break or make contact, according to
circuit concept. The DEHNguard S surge arresters are supplied with multi-
functional terminals for connection of conductors and busbars. This allows
for easy wiring in connection with other DINrail mountable devices. A
series connection according to IEC 60364-5-53, which is optimal for pro-
tection, can therefore be performed in many applications.