{"product_id":"westinghouse-504c740g07-circuit-breaker","title":"Westinghouse | 504C740G07 | Circuit Breaker | 400A | 3-Pole | 415V","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eWestinghouse 504C740G07\u003c\/strong\u003e is a rugged, three-pole circuit breaker designed for demanding 3‑phase power systems. With a 400 A rating and a 415 V nominal voltage, this unit is built to protect and stabilize industrial and commercial electrical networks, making it an ideal choice for maintenance, retrofit, and replacement projects where exact specifications matter.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 415V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number reference:\u003c\/strong\u003e 504C740G07 (best reference for compatibility)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e maintenance, retrofit, and replacement in compatible panels and systems\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this Westinghouse breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePrecise compatibility anchor:\u003c\/strong\u003e Use the exact part number 504C740G07 to confirm fit with your panel data sheet or equipment catalog, reducing guesswork during replacements.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-phase protection:\u003c\/strong\u003e The 3‑pole design provides balanced interruption and protection across all conductors in a 3‑phase circuit, helping to prevent uneven loading and potential equipment damage.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-current capability:\u003c\/strong\u003e 400 A rating supports substantial loads common in industrial environments, enabling reliable interruption and system safety without oversizing components.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile usage:\u003c\/strong\u003e Suitable for maintenance cycles, panel retrofits, and strategic replacements where matching ratings and form factor are required.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSafety and reliability in mind:\u003c\/strong\u003e Built to perform under demanding conditions typical of commercial power distribution, helping minimize unplanned downtime.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eUse cases and scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading or renewing aging switchgear where a 400A, 3‑pole, 415V breaker is specified.\u003c\/li\u003e \u003cli\u003ePhase-balanced protection in 3‑phase motors, drives, and distribution panels that operate at ~415V systems.\u003c\/li\u003e \u003cli\u003eQuick inventory solution for maintenance teams to keep spare breakers on hand for fast replacements.\u003c\/li\u003e \u003cli\u003eRetrofit projects where equipment catalogs reference the 504C740G07 part number for compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and verification tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAlways \u003cstrong\u003econfirm fit and ratings\u003c\/strong\u003e against your panel label or documentation before ordering.\u003c\/li\u003e \u003cli\u003eUse the \u003cstrong\u003e504C740G07\u003c\/strong\u003e part number as the primary compatibility reference to avoid mismatches.\u003c\/li\u003e \u003cli\u003eInspect the breaker’s mounting footprint and terminal connections to ensure seamless integration with existing bus bars and wiring.\u003c\/li\u003e \u003cli\u003eStore spare units in a clean, dry environment to maintain performance readiness for future maintenance needs.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether you’re performing routine maintenance, updating an aging distribution system, or stocking a replacement-ready component for critical equipment, the Westinghouse 504C740G07 circuit breaker delivers dependable 3‑phase protection with clear compatibility guidance. Add it to your toolkit to ensure you have the right part on hand when timing matters most.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Westinghouse","offers":[{"title":"Default Title","offer_id":46427309703330,"sku":"504C740G07","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_ad06fdd7-931c-4a09-bfbe-d05329579cd6.png?v=1765492978","url":"https:\/\/www.ampstate.com\/products\/westinghouse-504c740g07-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}