{"product_id":"square-d-fhf16045-circuit-breaker","title":"Square D | FHF16045 | Circuit Breaker | 45A | 1-Pole | 277V","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D FHF16045 circuit breaker is a precise, plug-in solution for protecting 277-volt circuits with a single 1-pole design. Engineered for reliability in commercial electrical systems, this 45-amp unit provides fast, clean interruption of electrical faults to keep wiring and connected equipment safe.\u003c\/p\u003e \u003cp\u003eDesigned for maintenance, retrofit, and replacement projects where matching specs matters, the FHF16045 is the right reference point for compatibility. When ordering, rely on the part number as your strongest guide to ensure a correct fit and proper protection in your panelboard or switchboard when handling 277 V circuits.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 45 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 1-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 277 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number reference:\u003c\/strong\u003e FHF16045\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIdeal for:\u003c\/strong\u003e maintenance, retrofit, and replacement in compatible Square D panels\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cp\u003eWhat sets this 1-pole 45A 277V breaker apart is its exact matching of your existing protection profile. It’s a purpose-built replacement that helps maintain consistent trip characteristics and predictable performance in 277-volt circuits, reducing downtime and the guesswork involved in compatibility checks.\u003c\/p\u003e \u003ch3\u003eUse cases and application scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRestoring protection in aging commercial panels where 277V distribution is used for lighting and branch circuits.\u003c\/li\u003e \u003cli\u003eRetrofits that require a precise 45-amp, 1-pole solution to fit existing bus configurations without panel modifications.\u003c\/li\u003e \u003cli\u003eMaintenance cycles where quick, accurate part identification by number (FHF16045) minimizes sourcing delays.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eFit, compatibility, and installation tips\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, confirm fit and ratings against your panel’s listing and existing protection scheme. Use the part number FHF16045 as the primary reference for compatibility, and verify that your circuit operates at 277V with a 45A rating in a single-pole configuration. When installing, follow standard electrical safety practices: shut off power, use proper personal protective equipment, and ensure all connections are secure and compliant with local electrical codes. If you’re unsure about panel compatibility, consult a qualified electrician to validate alignment with your system’s specifications.\u003c\/p\u003e \u003ch3\u003eWhat you’ll gain\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReliable, straightforward replacement that preserves protective coordination in 277V circuits.\u003c\/li\u003e \u003cli\u003eStreamlined sourcing with a clearly defined part number to minimize misfits and delays.\u003c\/li\u003e \u003cli\u003ePeace of mind from knowing you’re using a purpose-built Square D component designed for your specific amperage, voltage, and pole configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46426378076322,"sku":"FHF16045","price":2010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-fhf16045-circuit-breaker-45a-1-pole-277v-987.webp?v=1789566438","url":"https:\/\/www.ampstate.com\/products\/square-d-fhf16045-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}