ABB 1SVR730840R0200 Monitor Relay CM-SRS.11S-24-240VAC DC

ABB's 1SVR730840R0200 CM-SRS.11S is a single‑function current monitoring relay in the CM‑SRS family, designed to guard electrical circuits by sensing current in an input path and signaling when it crosses set thresholds. It operates from a 24–240 V AC/DC supply and provides one changeover (SPDT) output contact rated up to 250 V and 4 A, suitable for directly driving relays, alarms, or control circuits. The monitored current range between terminals B and C is 3 mA to 1 A RMS, giving reliable detection of overcurrent or current loss within its specified operating window. This compact device is intended for industrial automation and electrical distribution, compatible with ABB protection schemes and other CM‑SRS modules, and is commonly installed on DIN rails in electrical panels. Typical applications include monitoring line current for motors, pumps, and fans, triggering protective actions or control signals when current deviates from preset values, and providing interlock or fault indication in automation sequences. The product is identified by order number 1SVR730840R0200 and corresponds to the CM‑SRS.11S variant, ensuring compatibility with ABB’s monitoring relay lineup.