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Fail-safe function DEHN equipotential

bonding enclosure

The gas discharge tubes of the DRL 10 180 FSD plug-in SPD The DEHN equipotential bonding enclosure (DPG) is a lock-
block feature a fail-safe function. When the gas discharge able lightning current carrying metal enclosure for installa-
tube is overloaded, this function short-circuits the signal tion of wiring and protection components. Available in four
lines to earth to protect the arrester from possible burn-off different sizes, the enclosures provide terminals that allow to
caused by overcurrent. The disconnecting solder between integrate surge arresters and cable shields into the equipo-
the spring and the arrester melts and the signal lines are tential bonding system. The cover can be removed from the
short-circuited. The temperature-sensitive colour of the wall plate without tools and can be locked. The C-shaped
spring changes from pink to purple. This colour change design of the wall plate allows side and front access, thus
indicates that the gas discharge tube must be replaced. facilitating installation work.

As soon as the fail-safe function is activated, the signal is The DEHN equipotential bonding enclosure is equipped with
no longer available. However, terminal equipment is still terminal or disconnection blocks which can be fitted with
protected since surges and lightning currents are discharged surge arresters. Accessories for integrating cable shields or
to earth. The gas discharge tubes in the plug-in SPD block unused signal lines complete the DEHNrapid LSA system.
can be replaced individually. For this purpose, replacement
gas discharge tubes of type GDT 230 B3 FSD are available.

Type / Version DPG LSA 30 P DPG LSA 60 P
Part No. 906 100 906 101
LSA mounting frame for 1 x 3 blocks 1 x 6 blocks
Dimensions W x H x D 240 x 260 x 130 mm 240 x 350 x 130 mm

Type / Version DPG LSA 120 P DPG LSA 220 P
Part No. 906 102 906 103
LSA mounting frame for 2 x 6 blocks 2 x 11 blocks
Dimensions W x H x D 330 x 350 x 130 mm 330 x 500 x 130 mm

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