{"product_id":"square-d-fa14070b-circuit-breaker","title":"Square D | FA14070B | Circuit Breaker | 70A | 1-Pole | 277V | 18kA","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D FA14070B Circuit Breaker — a purpose-built protection device designed for commercial electrical systems that rely on 277V distribution. This 70A, 1-Pole unit is engineered to quickly interrupt faults and keep your panel safe, delivering dependable protection for demanding workloads.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey specs at a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eBrand: Square D\u003c\/li\u003e \u003cli\u003ePart number: FA14070B\u003c\/li\u003e \u003cli\u003eAmperage: 70A\u003c\/li\u003e \u003cli\u003ePole: 1-Pole\u003c\/li\u003e \u003cli\u003eVoltage: 277V\u003c\/li\u003e \u003cli\u003eInterrupting capacity: 18kA\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy this FA14070B matters\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned for maintenance, retrofit, and replacement projects where exact specifications are required, the FA14070B ensures a seamless fit with existing Square D panels and wiring configurations. The part number is the most reliable reference for compatibility—use it to confirm the breaker will drop into your enclosure without modification.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003ePractical use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eRetrofit a commercial building’s 277V lighting circuit, providing reliable protection for a 70A load.\u003c\/li\u003e \u003cli\u003eReplace a failed breaker in a Square D panel that currently houses FA-series devices, preserving electrical protection schemes.\u003c\/li\u003e \u003cli\u003eInstall in new construction where a 70A, single-pole protection device is required for a 277V feeder or branch circuit.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhat makes it different\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis breaker’s 18kA interrupting capacity is suited for environments with higher fault currents, reducing the risk of equipment damage and improving isolation during faults. Its 1-Pole configuration is ideal for dedicated 277V loads where a full multi-pole setup isn’t necessary, simplifying installation and panel planning while delivering robust protection.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eInstallation and safety tips\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAlways verify fit and ratings using the FA14070B part number before ordering or swapping breakers.\u003c\/li\u003e \u003cli\u003ePower down the panel and follow established lockout\/tagout procedures before installation or maintenance.\u003c\/li\u003e \u003cli\u003eEnsure the enclosure and conductors are rated for 277V and that the connected load aligns with a 70A protection device.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith Square D’s heritage of dependable electrical protection, the FA14070B stands out as a precise, compatible choice for commercial panels needing a 70A, 1-Pole, 277V solution with strong short-circuit protection. Add it to your cart as a targeted replacement or as part of a strategic retrofit to keep your electrical system safe, compliant, and performing at its best.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46424500797602,"sku":"FA14070B","price":310.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-fa14070b-circuit-breaker-70a-1-pole-277v-18ka-770.webp?v=1789372813","url":"https:\/\/www.ampstate.com\/products\/square-d-fa14070b-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}