Siemens Thermistor motor temperature protection Monitoring Relay with DPDT Contacts, 240 V ac/dc. Voltage Sensitivity: Motor Voltage. Voltage Sensing Range: 24 → 240 V ac/dc. Maximum Operating Temperature: +60°C. Width: 91.6mm. Height: 100mm. Dimensions: 22.5 x 91.6 x 100 mm. Minimum Operating Temperature: -25°C. Operating Temperature Range: -25 → +60 °C. Series: 3RN2. Length: 22.5mm. Terminal Type: Screw. Hazardous Area Certification: ATEX. MPN: 3RN2011-1BW30