{"product_id":"siemens-3ru1136-1kb0-thermal-overload-relay","title":"Siemens 3RU1136-1KB0 Thermal Overload Relay","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SIEMENS 3RU1136-1KB0 is a thermal overload relay designed to protect three-phase motors from sustained overcurrent conditions, including overload, phase loss, and phase imbalance. This device monitors motor current draw and trips the control circuit when current exceeds the preset threshold, preventing motor winding damage. It is intended for use in motor starter assemblies alongside compatible contactors in industrial and commercial electrical panels. Licensed electricians and industrial maintenance technicians are the primary installers of this class of protective device.\u003c\/p\u003e\u003cp\u003eThe 3RU1136-1KB0 is suited for motor branch circuit protection in industrial facilities, commercial buildings, and process control applications. It mounts directly to a matching contactor or independently on DIN rail, depending on the installation configuration. Typical applications include pump motors, conveyor drives, compressors, and fan systems where motor protection is required at the starter level. This relay is sized for applications requiring overload protection in the frame size corresponding to the S2 contactor class.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eThermal overload protection guards against sustained overcurrent and phase loss conditions\u003c\/li\u003e\n\u003cli\u003eDirect mounting to compatible S2-frame contactors for compact starter assembly\u003c\/li\u003e\n\u003cli\u003eAdjustable trip current range allows field calibration to motor nameplate FLA\u003c\/li\u003e\n\u003cli\u003eManual and automatic reset modes supported for flexible control circuit design\u003c\/li\u003e\n\u003cli\u003eCompact footprint suits space-constrained control panel installations\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style thermal overload relay for use in motor starter assemblies; consult the SIEMENS 3RU1 series product documentation to confirm contactor frame and current range compatibility before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed electrician in accordance with the NEC and applicable local codes. De-energize and lock out the panel before mounting or wiring the relay. Set the current adjustment dial to match the motor nameplate full-load amperage before energizing the circuit. Do not bypass the overload relay or defeat the trip mechanism under any operating condition.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.688 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 3.780 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 2.402 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 4.370 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC\u003c\/strong\u003e: 75455441245\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SIEMENS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 3RU1136-1KB0\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SIEMENS","offers":[{"title":"Default Title","offer_id":51383289282866,"sku":"3RU1136-1KB0","price":213.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/312678929.jpg?v=1782592304","url":"https:\/\/voomisupply.com\/products\/siemens-3ru1136-1kb0-thermal-overload-relay","provider":"Voomi Supply","version":"1.0","type":"link"}