Siemens Overload Relay NO/NC, 50 A, 4 A, 0.1 W. Pole Configuration: 3P. Range: Sirius Innovation. Contact Voltage Rating: 690 V ac. Mounting Style: DIN Rail Mount. Series: 3RB3. Number Of Auxiliary Contacts: 2. Terminal Type: Screw. Reset Method: Automatic, Manual. Length: 55mm. Width: 108.7mm. Depth: 80.7mm. MPN: 3RB3036-2UW1