Siemens 3RU2136-4JD0 Motor Thermal Overload Relay

Siemens 3RU2136-4JD0 Motor Thermal Overload Relay is a 54–65 A thermal overload device in size S2 for motor protection, designed to mount on Siemens contactors in the SIRIUS 3RU2 family. It provides Class 10 thermal protection and is intended for mounting on a contactor to guard mid-size motors in industrial equipment. The main circuit terminals are screw-type, while the auxiliary circuit terminals are spring-type, and the unit offers a manual or automatic reset option to suit maintenance practices. Typical applications include pumps, fans, conveyors, and general machinery where motor overload protection is required, and it is commonly used in conjunction with Siemens 3RU2 contactors to form a compact motor-protection assembly.