1SVR740700R0100

ABB CM-MSS.12P Thermistor Motor Protection Relay, Part Number 1SVR740700R0100, an industrial motor temperature monitoring and protection device designed for electrical control panels, motor control centers (MCC), industrial machinery, and automation systems.

The ABB CM-MSS.12P belongs to ABB's CM-MSS series of thermistor motor protection relays and is specifically engineered to monitor motor winding temperatures using compatible PTC thermistor sensors. The relay helps protect industrial motors against overheating caused by overload conditions, frequent starting, insufficient cooling, high ambient temperatures, and abnormal operating conditions.

Operating with a rated control supply voltage of 24V AC/DC, the ABB CM-MSS.12P features one changeover (SPDT) output contact rated at 250V / 4A. The relay uses one PTC sensor circuit and operates according to the closed-circuit principle, enabling connected control systems to respond when excessive motor winding temperature is detected.

The compact 22.5 mm wide housing supports standard DIN rail mounting. An optional sealable transparent cover can be used to prevent unauthorized adjustments.