{"product_id":"allen-bradley-w79-type-w-heater-element-ships-fast","title":"W79 | Allen-Bradley 111A Type W Heater Element for 500 Line Overload Relay Protection","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-start=\"0\" data-end=\"451\"\u003eThe Allen-Bradley W79 is a Type W heater element designed to provide Class 20 overload protection for motors controlled by 500 Line starters. Rated for 111 amps, this heater element delivers accurate thermal response to safeguard motors under standard operating conditions. The W79 enables reliable overload relay performance in general-purpose industrial applications.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eContactors \u0026amp; Starters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eW79\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThermal Overload\/Heater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFamily\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eW Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFull Load Amps (Min)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e111 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFull Load Amps (Max)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e111 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmbient Temperature at Controller (°C)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmbient Temperature at Controller (°F)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e104 °F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmbient Temperature at Motor (°C)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmbient Temperature at Motor (°F)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e104 °F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOverload Class\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClass 20 Protection, Type W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e500 Line motor starters and overload relays\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtection Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThermal overload\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About W79\u003c\/h4\u003e\n\u003cp data-start=\"590\" data-end=\"1074\" class=\"\"\u003eThe W79 is part of Allen-Bradley’s W Series, a line of heater elements engineered for compatibility with 500 Line overload relays. Its 111-amp full-load rating supports heavy-duty motor applications while maintaining consistent operation at ambient temperatures up to 40°C (104°F). Designed to deliver Class 20 protection, the W79 limits motor exposure to damaging currents by tripping within the appropriate time window under overload or locked-rotor conditions. As a Type W heater, it integrates seamlessly with Allen-Bradley relay assemblies, ensuring dependable and predictable thermal protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong data-start=\"1085\" data-end=\"1102\"\u003eKey Features:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eType W heater element: Designed for Allen-Bradley 500 Line overload relay systems.\u003c\/li\u003e\n\u003cli\u003e111A full-load rating: Suitable for heavy-duty motor protection requirements.\u003c\/li\u003e\n\u003cli\u003eClass 20 protection: Trips within the required time frame for standard industrial applications.\u003c\/li\u003e\n\u003cli\u003e40°C ambient operation: Rated for both controller and motor environments.\u003c\/li\u003e\n\u003cli\u003eAccurate thermal response: Ensures proper overload sensing and relay activation.\u003c\/li\u003e\n\u003cli\u003eCompatible with general-purpose motor applications: Supports reliable operation across diverse industrial settings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe W79 delivers the reliability and precision required for thermal overload protection in demanding motor control systems.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":48492880953642,"sku":"W79","price":49.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/W79.webp?v=1716293392","url":"https:\/\/iqelectro.com\/products\/allen-bradley-w79-type-w-heater-element-ships-fast","provider":"IQElectro","version":"1.0","type":"link"}