{"product_id":"hfb1040-circuit-breaker","title":"HFB1040 | Circuit Breaker | 40A | 1-Pole | 277V","description":"\u003cdiv\u003e\n\u003cp\u003eThe HFB1040 circuit breaker delivers reliable overcurrent protection for 277-volt industrial applications. With a 40-amp rating and a single-pole design, it’s purpose-built for maintenance, retrofit, and replacement projects where precise specifications matter.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 40 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 1-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 277 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number reference:\u003c\/strong\u003e HFB1040\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this HFB1040 stands apart\u003c\/h3\u003e\n\u003cp\u003eDesigned for industrial panels where 277V circuits are commonplace, this 1-pole breaker combines a straightforward form factor with precise 40A protection. It’s built to minimize downtime during maintenance and retrofit projects, providing dependable shutoff when overcurrent occurs and seamless compatibility with standard mounting schemes used in commercial environments. The clear alignment of amperage, voltage, and pole configuration ensures you’re selecting a device that matches the exact needs of your circuit.\u003c\/p\u003e \u003ch3\u003eIdeal use scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRetrofit of existing 277V single-pole circuits in commercial or industrial panels\u003c\/li\u003e \u003cli\u003eReplacement for a failed 40A, 277V breaker in service and maintenance outages\u003c\/li\u003e \u003cli\u003eProtection for lighting feeders and other 277V branch circuits in warehouses, factories, and facilities\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and installation tips\u003c\/h3\u003e\n\u003cp\u003eNotes: Confirm fit and ratings before ordering. Part number is the best reference for compatibility. When evaluating this breaker, double-check that your circuit requires 277V, a 40A rating, and a 1-Pole configuration to ensure a seamless fit in your panel.\u003c\/p\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eApplication: Industrial electrical panels and control circuits\u003c\/li\u003e \u003cli\u003eProtection type: Overcurrent protection for 277V systems\u003c\/li\u003e \u003cli\u003eMounting considerations: Suited for standard single-pole breaker slots in compatible panels\u003c\/li\u003e \u003cli\u003eReliability focus: Built for maintenance, retrofit, and replacement where exact specs matter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46426272759970,"sku":"HFB1040","price":2010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/hfb1040-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}