Superior Electric, DIN2R-40 Surge Arrester 480 V ac Maximum Voltage Rating 40kA Maximum Surge Current Transient Voltage

Superior Electric DIN2R Series models are a great choice for OEM applications requiring integral surge protection. The compact, low-profile module is ideal when configuring lighting panels, small electrical distribution panels, PLC and Variable Speed Drive control panels and motion and instrumentation control equipment.

Visual Failure Indicator and Remote Signalling
Screw Terminal Connection
Single-Pole, Parallel-Connected Design
Internal Thermal Disconnect System

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.