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.
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