ABB 1SVR730830R0400 Sirius Safety Relay Module

ABB 1SVR730830R0400 is a Sirius CM-ESS.2S voltage monitoring relay with DPDT (double-pole, double-throw) outputs designed to supervise single‑phase power feeds in industrial automation. The device accepts a control supply of 24 to 240 VAC or 24 to 240 VDC and can monitor voltages in the 3 to 600 Vrms range, triggering two independent changeover outputs when the monitored voltage deviates from setpoints. As part of ABB's CM-ESS family, this module provides reliable voltage supervision to protect control circuits and connected equipment in power distribution, motor control, and automation applications. You’ll find the 1SVR730830R0400 listed across ABB catalogs and distributor pages (for example Mouser, TME, and Rexel) under CM-ESS.2S, verifying its 24–240 VAC/DC compatibility and DPDT contact configuration.