Control Unbit: Thermistor motor protection Standard evaluation unit AUTO, 1 NO + 1 NC, 230 V AC Screw terminal. Control Unit: Thermistor motor protection Standard evaluation unit AUTO 1 NO + 1 NC 230 V AC Screw terminal 3RN1010-1CM00 Siemens is a versatile industrial motor protection relay suitable for a wide range of applications in various industries. This reliable and high-quality product can be purchased at PLC2Day for your convenience.