Schneider Electric Phase Monitoring Relay with DPDT Contacts, 3 Phase, 380 → 480 V ac. Voltage Sensitivity: Overvoltage, Undervoltage. Voltage Sensing Range: <100 V ac. Width: 79.5mm. Minimum Operating Temperature: -20°C. Series: Zelio Control. Mounting Type: DIN Rail. Minimum Voltage Sensed: 380 V ac. Operating Temperature Range: -20 → +50 (60 Hz) °C, -20 → +60 (50 Hz) °C. Maximum Operating Temperature: +50 (60 Hz) °C, +60 (50 Hz) °C. Height: 90mm. Dimensions: 22.9 x 79.5 x 90 mm. MPN: RM22TU23