{"product_id":"eaton-hfd1040bp10-circuit-breaker","title":"Eaton | HFD1040BP10 | Circuit Breaker | 40A | 1-Pole | 277V","description":"\u003cdiv\u003e\n\u003cp\u003eThe Eaton \u003cb\u003eHFD1040BP10\u003c\/b\u003e circuit breaker delivers reliable overcurrent protection for 277V systems, specifically sized at \u003cb\u003e40A\u003c\/b\u003e and designed as \u003cb\u003e1-Pole\u003c\/b\u003e for single‑conductor protection on one hot line. Built for maintenance, retrofit, and replacement projects, this breaker is ready when your existing panel requires exact specifications to keep circuits safe and compliant.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eAmperage and configuration:\u003c\/b\u003e 40A, \u003cb\u003e1-Pole\u003c\/b\u003e for single‑phase 277V circuits, providing targeted protection where it matters most.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSystem compatibility:\u003c\/b\u003e Engineered to align with Eaton’s HFD family, ensuring consistent fit, mounting, and trip characteristics within compatible panels.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eReference for compatibility:\u003c\/b\u003e The \u003cb\u003eHFD1040BP10\u003c\/b\u003e part number is your most reliable guide to matching existing equipment and panel requirements.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eIdeal use cases:\u003c\/b\u003e Replacement during service upgrades, retrofit installations, or maintenance cycles where exact specs are required to minimize downtime and ensure safe operation.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePractical considerations:\u003c\/b\u003e Always confirm fit and ratings before ordering to avoid mismatches with panel model and bus configuration.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this matters in the field: choosing the correct 40A, 1‑pole breaker for a 277V circuit means less guesswork during a retrofit and quicker restoration of service. The Eaton HFD1040BP10 provides predictable tripping behavior, clear electrical isolation, and a straightforward installation path for technicians familiar with Eaton’s legacy panels. \u003c\/p\u003e \u003cp\u003e\u003cb\u003eTips for installation and use\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eHave a qualified electrician verify panel compatibility and perform the replacement to maintain safety and code compliance.\u003c\/li\u003e \u003cli\u003eEnsure the service is de-energized and follow lockout\/tagout procedures before handling any breakers.\u003c\/li\u003e \u003cli\u003eUse appropriate torque on terminals as specified by your panel’s installation guidelines to maintain a reliable connection.\u003c\/li\u003e \u003cli\u003eKeep a compatible spare on hand for quick maintenance in commercial or industrial environments that rely on 277V distribution.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether you’re upgrading an aging panel, retrofitting for new lighting or equipment loads, or simply stocking a replacement for ongoing maintenance, the Eaton HFD1040BP10 40A 1‑Pole 277V circuit breaker is a precise, dependable choice built to integrate smoothly with your existing Eaton infrastructure.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Eaton","offers":[{"title":"Default Title","offer_id":46426160824482,"sku":"HFD1040BP10","price":2010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-hfd1040bp10-circuit-breaker-40a-1-pole-277v-792.webp?v=1789524699","url":"https:\/\/www.ampstate.com\/products\/eaton-hfd1040bp10-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}