{"product_id":"siemens-3ru21160kb0-overload-relay-class-10","title":"Siemens 3RU21160KB0 Overload Relay Class 10","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SIEMENS 3RU21160KB0 is a Class 10 thermal overload relay designed to protect three-phase motors from overload and phase-loss conditions. It monitors motor current continuously and trips the circuit when sustained overcurrent threatens motor windings. Class 10 trip timing means the relay responds within 10 seconds at six times the set current, making it well suited for standard induction motor applications. Licensed electricians and industrial maintenance technicians install this relay as part of a motor starter assembly in control panels, switchgear lineups, and machine control circuits.\u003c\/p\u003e\u003cp\u003eThis overload relay is used in residential, commercial, and light industrial motor control applications where consistent, reliable overload protection is required. It is typically mounted in combination with a contactor to form a complete motor starter. Common install scenarios include pump panels, fan coil unit controls, compressor circuits, and conveyor systems. The compact footprint fits into standard din-rail or direct-mount starter configurations without requiring additional spacing hardware.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eClass 10 trip characteristic for standard induction motor protection\u003c\/li\u003e\n\u003cli\u003eContinuous current monitoring with automatic phase-loss detection\u003c\/li\u003e\n\u003cli\u003eCompact form factor at 4.016 inches long, 1.929 inches wide, and 3.307 inches tall\u003c\/li\u003e\n\u003cli\u003eLightweight construction at 0.331 pounds for easy panel integration\u003c\/li\u003e\n\u003cli\u003eDesigned for direct combination with compatible Siemens contactors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation overload relay for three-phase motor starter assemblies requiring Class 10 trip protection.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified electrician in accordance with the National Electrical Code (NEC) and any applicable local codes. De-energize and lock out the circuit before installing or adjusting the relay. Set the current adjustment dial to match the motor full-load amperage listed on the motor nameplate. Do not defeat or bypass the overload relay to restore a tripped circuit without first identifying and correcting the root cause of the overload condition.\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: 0.331 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: 66264392004\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: 3RU21160KB0\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SIEMENS","offers":[{"title":"Default Title","offer_id":51383602708786,"sku":"3RU21160KB0","price":150.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/312676822.jpg?v=1782601865","url":"https:\/\/voomisupply.com\/products\/siemens-3ru21160kb0-overload-relay-class-10","provider":"Voomi Supply","version":"1.0","type":"link"}