The CM-MSE relay is from the CM thermistor motor protection relay range. This relay operates with a rated control supply voltage of 110-130 V AC and has a 1 n/o output contact rated at 250 V / 4 A. It features one sensor circuit for monitoring of PTC temperature sensors or bimetals. This relay offers automatic reset and works according to the closed-circuit principle. A sealable transparent cover for protection against unauthorized changes is available as accessory