{"product_id":"685978-685978-80a-2p-440v-circuit-breaker","title":"685978 685978 Circuit Breaker, 80A, 2-Pole, 440V","description":"\u003cdiv\u003e\n\u003cp\u003eThe 685978 circuit breaker is built for rugged industrial use, delivering reliable overcurrent protection for demanding electrical systems. With an 80 A rating and a 2-pole design for 440 V applications, this unit is ideal for industrial service, ongoing maintenance, and replacement projects. Use the part number 685978 to confirm exact compatibility with your panel and operating requirements.\u003c\/p\u003e \u003ch3\u003eWhy this 685978 circuit breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eTwo-pole protection for balanced safety\u003c\/strong\u003e – disconnects both live lines in a 440 V circuit, helping safeguard equipment and reduce the risk of partial outages.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-load capability\u003c\/strong\u003e – 80 A rating makes it suited for mid-to-high current feeders, motors, conveyors, and other demanding industrial loads.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIndustrial-ready form factor\u003c\/strong\u003e – designed to integrate with compatible panels and enclosure configurations in manufacturing environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eField-friendly replacement\u003c\/strong\u003e – straightforward swap for aging or worn breakers, helping minimize downtime during maintenance or upgrades.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear compatibility check\u003c\/strong\u003e – verify fit quickly by cross-referencing part number 685978 with your application and panel documentation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMain feeders and branch protection in industrial distribution panels\u003c\/li\u003e \u003cli\u003eMotor control circuits and drive applications in manufacturing floors\u003c\/li\u003e \u003cli\u003eReplacement for aging breakers in service or maintenance scenarios\u003c\/li\u003e \u003cli\u003ePanel upgrade projects where 440 V, 2-pole protection is required\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and installation considerations\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify fit by part number (685978) and confirm the panel supports 440 V, 2-pole devices with an 80 A rating.\u003c\/li\u003e \u003cli\u003eEnsure the circuit is de-energized and all safety protocols are followed before replacement.\u003c\/li\u003e \u003cli\u003eConsult your panel’s installation guidelines for termination torque and mounting specifics to ensure a reliable connection.\u003c\/li\u003e \u003cli\u003eKeep documentation handy for future maintenance, audits, or part-number-based compatibility checks.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAmperage: 80 A\u003c\/li\u003e \u003cli\u003ePoles: 2\u003c\/li\u003e \u003cli\u003eVoltage: 440 V\u003c\/li\u003e \u003cli\u003eProduct Type: Circuit Breaker\u003c\/li\u003e \u003cli\u003ePart\/Manufacturer: 685978\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46416140370082,"sku":"685978","price":460.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_229276d9-908d-46df-93e5-6fe31866e0ff.png?v=1765492975","url":"https:\/\/www.ampstate.com\/products\/685978-685978-80a-2p-440v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}