The CM-MSS relay is from the CM thermistor motor protection relay range. This relay operates with a rated control supply voltage of 24 V AC and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. It features one sensor circuit for monitoring of PTC temperature sensors or bimetals and works according to the closed-circuit principle. Automatic reset and fault storage are configurable. This CM-MSS is equipped with a reset button and offers the possibility of using a remote reset. A sealable t ransparent cover for protection against unauthorized changes is available as accessory.
This part is discontinued by supplier.
The devices CM-MSS (4) and (5) are used to monitor the overload of motors by the wiring temperature. The motors have to be fitted with PTC sensors.
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