1SVR730700R0100

ABB CM-MSS.12S Thermistor Motor Protection Relay, Part Number 1SVR730700R0100, a reliable industrial motor temperature monitoring device designed for electrical control panels, motor control centers (MCC), industrial automation systems and motor protection applications.

The ABB CM-MSS.12S belongs to ABB's CM-MSS series of thermistor motor protection relays and is specifically designed to monitor motor winding temperatures through compatible PTC thermistor temperature sensors. By detecting excessive motor temperatures, the relay helps protect electric motors against overheating caused by overload conditions, inadequate ventilation, frequent starting and abnormal operating conditions.

The relay operates with a rated control supply voltage of 24V AC/DC and features one changeover (SPDT) output contact rated at 250V / 4A. It incorporates a single sensor monitoring circuit and uses the closed-circuit operating principle to support protective switching when abnormal motor temperatures are detected.