{"product_id":"siemens-3ru1136-4fb0-relay","title":"Siemens 3RU1136-4FB0 Relay","description":"\u003cdiv\u003e\u003cp\u003eSiemens 3RU1136-4FB0 is a Sirius size S2 thermal overload relay designed to mount on compatible contactors to protect three‑phase motors from overload. It provides a 28–40 A main current rating with 1 normally open and 1 normally closed auxiliary contact (1NO+1NC) and offers manual‑ or automatic‑reset operation via screw terminals on both the main and auxiliary circuits. The device features 690 V insulation, 6 kV surge withstand, IP20 front protection (finger‑safe), and a typical power loss of 9 W, rated for operation from −20 to +70 °C and up to 2,000 m above sea level. This relay is part of the SIRIUS family and is intended for mounting on size S2 contactors; its modern successor is 3RU2136-4FB0 in the 3RU2 line. With Class 10 thermal protection, it provides reliable motor overload protection in industrial panels while offering straightforward monitoring through its auxiliary contact and screw-terminal wiring. \u003c\/p\u003e\u003c\/div\u003e","brand":"SIEMENS","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":46268123119850,"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-3ru1136-4fb0-relay","provider":"GTG Hardware","version":"1.0","type":"link"}