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Electrical Time Switches, Timers & Control Relays

ABB THERMISTOR MOTOR PROTECTION RELAY 2X 1CO or 1X2CO CM-MSS.51S

Product Code: CM-MSS.51S

Thermistor motor protection relay with a 2-sensor circuit. Monitors PTC temperature and detects short-circuits. Configurable settings for fault storage, evaluation (single or accumulative), and interrupted wire detection. Offers auto, manual, or remote reset options. Features 2 X 1 changeover or 1 X 2 changeover contacts (SPDT) with a rating of 4A/250V. Control supply voltage is 24-240VAC/DC. Compact design with a width of 22.5mm modules.

Technical Specifications

Brand ABB
Connection Type Double-chamber cage connection terminals
Contacts 2 x 1CO or 1 x 2CO (configurable)
Degree of Protection IP50 (Housing), IP20 (Terminals)
Dimensions (mm) 22.5W x 85.6H x 103.7D
Duty Time 100%
Function Short-circuit detection (configurable), Dynamic interrupted wire detection, Non-volatile fault storage (configurable)
LED Colour U: Green, F: Red, R: Yellow
Mounting Type DIN Rail
No. of LED 3
Operational Temperature Range (°C) -25 to +60
Overvoltage Category III
Pollution Degree 3
Rated Control Supply Voltage AC/DC (V) 24 - 240
Rated Current (A) 4
Rated Frequency (Hz) 15-400
Rated Impulse Withstand Voltage (kV) 4
Reference No. 1SVR730712R1300
Sensor Type PTC Type A
Standards and Approvals CAN/CSA C22.2 No.14, EN 50495, IEC/EN 63000, IEC/EN 60079-7, IEC/EN 60947-5-1, IEC/EN 60947-8, UL 508
Storage Temperature (°C) -40 to +85
Terminal Type Screw
Weight (kg) 0.145

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