Siemens Overload Relay NO/NC, 2.8 → 4 A, 4 A, 3 kW. Pole Configuration: 3P. Range: Sirius Innovation. Contact Voltage Rating: 690 V ac. Mounting Style: Direct Contactor. Series: 3RU. Terminal Type: Cage Clamp. Reset Method: Automatic, Manual. Depth: 73mm. Width: 45mm. Length: 87mm. MPN: 3RU2126-1EC0