{"product_id":"square-d-a-86-contactor-thermal-unit","title":"Square D A.86 Contactor Thermal Unit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SQUARE D A.86 is a thermal unit designed for use with compatible Square D contactor and overload relay assemblies. Thermal units serve as the current-sensing element inside an overload relay, melting or deflecting under sustained overcurrent conditions to trip the relay and protect the connected motor or load. Selecting the correct thermal unit for the application current range is critical to proper motor protection. This unit ships as a single piece and weighs approximately 0.04 pounds, with a compact footprint of 2.4 inches in length, 1.2 inches in width, and 0.8 inches in height.\u003c\/p\u003e\u003cp\u003eThermal units like the A.86 are found in commercial and industrial electrical panels, motor control centers, and HVAC equipment control circuits where overload relays protect compressor motors, fan motors, and pump motors. Electricians and HVAC controls technicians install them during new motor control installations or when replacing a tripped or failed thermal unit as part of routine overload relay service.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFunctions as the current-sensing element inside a compatible Square D overload relay\u003c\/li\u003e\n\u003cli\u003eCompact size: 2.4 inches long, 1.2 inches wide, 0.8 inches tall\u003c\/li\u003e\n\u003cli\u003eLightweight at 0.04 pounds for easy handling during installation\u003c\/li\u003e\n\u003cli\u003eSingle-piece package quantity for direct one-for-one replacement\u003c\/li\u003e\n\u003cli\u003eClassified as a contactor accessory thermal unit per manufacturer specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement thermal unit for compatible Square D overload relay assemblies. Verify the required thermal unit designation against the overload relay nameplate and motor full-load amperage before ordering, as thermal units are current-range specific.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThermal units are installed by licensed electricians or qualified HVAC controls technicians. Always de-energize the motor control circuit and verify zero voltage with a meter before opening the overload relay enclosure. The correct thermal unit must be selected based on the motor full-load amp rating per the overload relay manufacturer selection chart — installing an incorrect unit will result in improper motor protection. Work performed on motor control circuits must comply with applicable NEC requirements and local electrical codes.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eContactor Accessory Type\u003c\/strong\u003e: Thermal Unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 2.4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 1.2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 0.8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.04 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SQUARE D\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: A.86\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SCHNEIDER ELECTRIC","offers":[{"title":"Default Title","offer_id":51542880682290,"sku":"A.86","price":47.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/711643bed0fae375888eb69ab8f16262_f483896e-f1f5-4cef-8762-8afe7064599d.jpg?v=1785909779","url":"https:\/\/voomisupply.com\/products\/square-d-a-86-contactor-thermal-unit","provider":"Voomi Supply","version":"1.0","type":"link"}