Phoenix Contact, PT 4X1- 5DC-ST Surge Protector 5 V dc Maximum Voltage Rating 20kA Maximum Surge Current Protective Plug

PLUGTRAB PT- IQ Intelligent and systematic surge protection plugs for the PLUGTRAB PT- IQ surge protection system. The PLUGTRAB PT- IQ protective systems has unique three stage display which indicates damaged as well as failed plugs. The three display stages are: Green - OK; Yellow - Performance limit reached and replacement recommended; Red - Overloaded and replacement required. The replacement PLUGTRAB PT-IQ Plugs are for both the direct and indirect grounding connection options.

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Surge Protection Devices, SPDs (DIN-rail)

Voltage surges, often referred to as spikes or transients are typically caused by switching of fluorescent lights, fuses blowing or nearby lightning activity. The worst voltage surges are usually caused by lightning and can reach up to 6000V, with current surges of over 3000A. The maximum size of the voltage and current surges depends on the location within the building's wiring system. BS7671: 2011 Amendment 1 Sections 443 and 534 cover risk assessment and provides guidance on protection of electronic equipment for installation engineers to follow. The fullest information on lightning and surge protection comes from the BSEN 62305 series of standards.