{"product_id":"siemens-3ru21161dc0-overload-relay-class-10","title":"Siemens 3RU21161DC0 Overload Relay Class 10","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SIEMENS 3RU21161DC0 is a Class 10 thermal overload relay designed to protect three-phase motors from overload and phase-failure conditions. It mounts directly to compatible Siemens contactor assemblies, making it a compact and reliable component in motor starter circuits. Class 10 trip response means the relay trips within 10 seconds at 7.2 times the set current, providing fast protection for motors with low starting inertia. Licensed electricians and industrial maintenance technicians typically install this relay in motor control panels and combination starter assemblies.\u003c\/p\u003e\u003cp\u003eThis overload relay is suited for residential, commercial, and light industrial motor control applications. It is used in motor starter assemblies where direct-on-line starting is employed and where reliable overload protection is required. Common installation scenarios include pump motors, fan motors, and conveyor drives controlled through contactor-based starters. Its compact footprint allows integration into existing panel layouts without significant modification.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eClass 10 trip characteristic provides fast overload protection for low-inertia motor loads\u003c\/li\u003e\n\u003cli\u003eDesigned for direct mounting to compatible Siemens contactor assemblies for a compact starter build\u003c\/li\u003e\n\u003cli\u003eThermal overload detection guards against motor damage from sustained overcurrent and phase loss\u003c\/li\u003e\n\u003cli\u003eCompact dimensions of 4.016 inches x 1.929 inches x 3.307 inches suit tight panel installations\u003c\/li\u003e\n\u003cli\u003eLightweight construction at 0.379 pounds simplifies handling during installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style overload relay for use with compatible Siemens contactor-based motor starter assemblies. Verify contactor frame size and current setting range against the application requirements 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 control panel before installing or adjusting the relay. Set the current adjustment dial to match the full-load ampere rating shown on the motor nameplate. Do not bypass or defeat the overload relay reset mechanism during commissioning.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip Class\u003c\/strong\u003e: Class 10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 4.016 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 1.929 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 3.307 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.379 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1 per pack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC\u003c\/strong\u003e: 66264392026\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: 3RU21161DC0\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SIEMENS","offers":[{"title":"Default Title","offer_id":51383239147826,"sku":"3RU21161DC0","price":150.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/312676824.jpg?v=1782590694","url":"https:\/\/voomisupply.com\/products\/siemens-3ru21161dc0-overload-relay-class-10","provider":"Voomi Supply","version":"1.0","type":"link"}