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Class C - Low Voltage Power Supply Protection

The Class C series of over-voltage surge protective devices has been developed to protect against the effects of indirect lightning discharges and induced voltages and is intended to provide protection in zones 1 — 2 per IEC 62305.

Category IEC / EN / VDE: Class II / Type 2 / C. Available with and without remote signalling contacts.

DVSC27545 consists of a high performance varistor block with thermal disconnection device. The plug-in module/base design facilitates replacement of a failed module in situ without the need to remove system wiring.

DVSC275452TNS series combines two 45kA varistor modules to provide protection for single phase TNS networks.

DVSC275452TT series combines a 45kA varistor and gas discharge tube to provide protection for TT single phase networks, where N to PE galvanic isolation is required.

DVSC400453TNC series combines three 45kA varistor modules, to provide protection for TNC three phase networks with a combined PEN conductor.

DVSC400454TNS series combines four 45kA varistor modules, to provide protection for TNS three phase networks with separate PE and N conductors.

DVSC400454TT series combines three 45kA varistor modules and a gas discharge tube, to provide protection for TT three phase networks, where N to PE galvanic isolation is required.


Product Variants


DVSC275452TNS - DVSC275452TNS Class C Surge Protection Device Single Phase TNS 45KA
DVSC275452TT - DVSC275452TT Class C Surge Protection Device Single Phase TT 45KA
DVSC27545 - DVSC27545 Class C Surge Protection Device Single Phase 45KA
DVSC400454TNS - DVSC400454TNS Class C Surge Protection Device Three Phase TNS 45KA
DVSC400454TT - DVSC400454TT Class C Surge Protection Device Three Phase TT 45KA
DVSC400453TNC - DVSC400453TNC Class C Surge Protection Device Three Phase TNC 45KA