{"product_id":"westinghouse-504c740g20-circuit-breaker","title":"Westinghouse | 504C740G20 | Circuit Breaker | 3-Pole | 277V","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Westinghouse 504C740G20, a \u003cstrong\u003e3-Pole\u003c\/strong\u003e \u003cstrong\u003e277V\u003c\/strong\u003e circuit breaker designed for dependable protection in commercial and industrial panels. Engineered for maintenance, retrofit, and replacement projects, this unit ensures you can preserve system safety while upgrading or repairing existing electrical infrastructure. The \u003cstrong\u003e504C740G20\u003c\/strong\u003e part number is the best reference for compatibility, so verify fit and ratings before ordering.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e3-Pole protection\u003c\/strong\u003e delivers synchronized interruption across all three phases in 277V systems, ideal for balanced 3-phase loads.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e277V operation\u003c\/strong\u003e tailored for commercial lighting, HVAC, and other 277V circuits common in office buildings and warehouses.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eExact part reference\u003c\/strong\u003e uses the 504C740G20 model number to ensure compatibility with matching Westinghouse panels and replacement catalogs.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e Retrofit-ready\u003c\/strong\u003e designed to drop into compatible frames with minimal disruption, making upgrades or replacements smooth and efficient.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDurable performance\u003c\/strong\u003e built for reliable interrupting action in demanding environments, helping protect equipment and personnel.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIdeal applications include panel upgrades in commercial facilities, replacement in existing 3-phase systems, and new installs that require a precise 277V, 3-pole breaker. To ensure seamless replacement, compare your panel’s listing with the 504C740G20 reference and confirm that the voltage, pole configuration, and trip characteristics align with your circuit design.\u003c\/p\u003e \u003cp\u003eBefore installation, verify compatibility by checking the panel’s catalog numbers and the circuit’s voltage requirements. Match the exact part number \u003cstrong\u003e504C740G20\u003c\/strong\u003e to your panel’s specification sheet, and ensure the protection rating corresponds to the circuit’s amperage and load profile. This careful check helps you avoid mismatches and ensures reliable, code-compliant operation.\u003c\/p\u003e \u003cp\u003eWith the Westinghouse 504C740G20, you gain a dependable, clearly specified solution for 277V three-phase circuits—delivering safety, compatibility, and peace of mind for maintenance, retrofit, and replacement projects.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Westinghouse","offers":[{"title":"Default Title","offer_id":46427306524834,"sku":"504C740G20","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-504c740g20-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}