ABB 1SVR730831R1300 Safety Relay Module

ABB CM-ESS.1S voltage monitoring relay, order code 1SVR730831R1300, features a single changeover (1 C/O) contact and monitors AC voltage in a 3–600 VRMS range with a 220–240 VAC supply. This device is designed to supervise the presence and level of the supply feeding safety-related control circuits, triggering its output when the monitored voltage falls outside the set window to help protect equipment and operators. As part of ABB's CM-ESS family, the 1S device provides a compact, discrete signal suitable for integration into industrial automation environments. The 1SVR730831R1300 variant is the 220–240 VAC version configured for 1C/O output and 3–600 VRMS measurement, aligning with ABB's catalog entries for electronic voltage sensing relays.