Siemens Thermistor motor temperature protection Monitoring Relay with SPDT Contacts, 240 V ac/dc. Voltage Sensitivity: Motor Voltage. Voltage Sensing Range: 24 → 240 V ac/dc. Series: 3RN2. Width: 91.6mm. Terminal Type: Cage Clamp. Length: 17.5mm. Minimum Operating Temperature: -25°C. Dimensions: 17.5 x 91.6 x 100 mm. Height: 100mm. Mounting Type: DIN Rail. Operating Temperature Range: -25 → +60 °C. Maximum Operating Temperature: +60°C. MPN: 3RN2010-2CW30