Siemens 3RU1136-4EB0 is a SIRIUS overload relay rated for 22–32 A, designed to provide motor protection when mounted on Siemens contactors in the 3RT/3RU family. It features a 1 normally open + 1 normally closed auxiliary circuit (1NO+1NC) and supports manual or automatic reset, with screw-terminal connections for both the main and auxiliary circuits. This Size S2, Class 10 relay is rated for up to 690 V, IP20 protection, and typical power loss around 9 W, with rugged mechanical ratings (8 g / 10 ms shock and 6 kV surge) suitable for installations up to 2000 m above sea level.
