Siemens Overload Relay NO/NC, 4 A, 22 → 110 kW. Pole Configuration: 3P. Range: Sirius Classic. Contact Voltage Rating: 220 V dc, 230 V ac. Series: 3RB2. Reset Method: Automatic, Manual. Terminal Type: Screw. Depth: 156mm. Width: 85mm. Length: 145mm. Operating Temperature Range: -25 → +60 °C. Minimum Operating Temperature: -25°C. MPN: 3RB2163-4GC2