Siemens 3RU1136-4EB0 U Electromechanical Contactor

Siemens 3RU1136-4EB0 U is a Sirius thermal overload relay (size S2) designed to protect three‑phase motors when paired with compatible contactors, such as the Siemens 3RT1033/1034/1035/1036 series. It provides a rated current range of 22–32 A, supports insulation up to 690 V, and offers a surge resistance of 6 kV, with a total power loss of 13.8 W (4.6 W per pole) at the rated current in hot operation. The relay uses screw-terminal connections for both main and auxiliary circuits, is front IP20 protected, and measures 105 mm high, 55 mm wide, and 118 mm deep, weighing about 0.33 kg. This is a phased‑out product; the recommended successor is 3RU2136-4EB0.