ABB 1SVR730830R0500 Safety Relay Module 24V DC

ABB 1SVR730830R0500 is a CM-ESS.MS voltage monitoring relay that safeguards safety-related control circuits by supervising the supply voltage. With a control supply range of 24–240 V AC/DC, it can be powered from common industrial supplies, while its measurement range covers 3–600 V (AC/DC), enabling detection of undervoltage and overvoltage on the monitored lines. The module supports multiple monitoring modes, including undervoltage, overvoltage, window monitoring, and open/closed circuit configurations, and offers timing functions for a configurable trip delay to suit machine restart or interlock schemes. Typical applications include safeguarding safety relays, interlocking circuits, and input conditioning for PLCs or safety controllers in automation environments. The unit is designed for integration into ABB safety architectures and is distinguished by its compact form factor in the CM-ESS family, reliably triggering protective outputs when voltages stray beyond programmed thresholds. This 24–240 V AC/DC powered device is rated for monitoring across broad voltage ranges, providing precise, settings-based protection for electrical systems without introducing false trips in normal operation.