Siemens Thermistor motor temperature protection Monitoring Relay with DPDT Contacts, 24 V ac/dc. Voltage Sensitivity: Motor Voltage. Length: 22.5mm. Mounting Type: DIN Rail. Operating Temperature Range: -25 → +60 °C. Maximum Operating Temperature: +60°C. Height: 100mm. Dimensions: 22.5 x 91.6 x 100 mm. Terminal Type: Cage Clamp. Hazardous Area Certification: ATEX. Series: 3RN2. Width: 91.6mm. Minimum Operating Temperature: -25°C. MPN: 3RN2011-2BA30