{"product_id":"siemens-3ru2136-4dd0-overload-relay","title":"Siemens 3RU2136-4DD0 Overload Relay","description":"\u003cdiv\u003e\u003cp\u003eSiemens 3RU2136-4DD0 is a thermal overload relay in the Sirius 3RU2 motor-protection family, designed to be mounted on a contactor for compact motor starter assemblies. It provides thermal protection for motors with a nominal load current range of 18 to 25 A, and is sized Size S2 with Class 10 protection. In the main circuit it uses screw terminals, while the auxiliary circuit uses spring-type terminals for quick wiring. The unit supports a Manual-Automatic-Reset configuration, enabling either manual reset after a trip or automatic re-energization once the fault is cleared. This overload relay is intended to operate in motor circuits and is compatible with Siemens protection systems, ensuring proper coordination with the partner contactor to prevent motor damage due to overloads. As part of the 3RU2 family, the 4DD0 variant shares core construction and mounting geometry with other 3RU2 relays, simplifying replacement and retrofit in existing Siemens panels. The compact Size S2 form factor fits standard Siemens B-type contactor arrangements and is commonly used in conveyors, pumps, fans, and processing equipment where reliable thermal protection is required for 18–25 A loads.\u003c\/p\u003e\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"New","offer_id":46268125839594,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8039\/3450\/files\/GTG-STOCK-017.png?v=1788727429","url":"https:\/\/gtghardware.com\/products\/siemens-3ru2136-4dd0-overload-relay","provider":"GTG Hardware","version":"1.0","type":"link"}