This new SPD is intended to be used in situations where the SPD cannot be connected to equipotential bonding or earthing conductor.
It is to be mounted onto signal lines and its internal connection has only in differential mode (line – line) only, serving both as coarse and fine protection of lines running at voltage level up to 24V.
Concerning its technical execution, the SPDs contain a replaceable module, which, even when removed, does not make the signal line to be interrupted. DMG-024-V/1-4FR1-DIF can be used for two cores till four cores signal lines.
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