Siemens Overload Relay NO/NC, 3.5 → 5 A, 5 A, 4 kW. Pole Configuration: 3P. Range: Sirius Innovation. Contact Voltage Rating: 690 V ac. Mounting Style: Direct Contactor. Series: 3RU. Number Of Auxiliary Contacts: 2. Terminal Type: Screw. Reset Method: Automatic, Manual. Length: 87mm. Depth: 73mm. Width: 45mm. MPN: 3RU2126-1FB0