Siemens 3RU2136-4AD0 Three-Phase Thermal Overload Relay

Siemens 3RU2136-4AD0 is a thermal overload relay (11–16 A) from the SIRIUS 3RU2 family, designed for motor protection and mounting on contactors in size S2 with Class 10 thermal protection. The main circuit uses screw terminals, while the auxiliary circuit employs spring-type terminals, and the unit supports a manual-automatic reset to suit different control scenarios. Weighing about 0.322 kg, this PM300 Active lifecycle product is RoHS-compliant and carries German origin, with catalog references including EAN 4011209916890 and UPC 887621919474. Typical applications include protection of small-to-medium motors in industrial motor-start systems and control panels where reliable overload protection is required.