Eaton, MA3100 Surge Suppressor Unit 270 V ac Maximum Voltage Rating 45kA Maximum Surge Current 3 Phase

Single & 3-phase Mains MA3100 Series

Surge protection designed to cope with high magnitude 10 / 350μs current waveforms as described in IEC 61312.

IEC Class II surge protection
Remote contacts available

Approvals

UL 1449

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 spikes are usually caused by lightning strikes and can reach up to 6000V, with current surges of over 3000A. The maximum size of the let-through voltage and current inrush 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.