{"product_id":"square-d-fa14040c","title":"Square D FA14040C 40A 1-Pole 277 V Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D FA14040C 40A 1-Pole 277 V Circuit Breaker — a compact, reliable safety device designed to protect 277-volt circuits in commercial and industrial electrical systems. With a 40-amp rating and a single-pole configuration, this breaker delivers targeted overcurrent protection while helping you maximize panel space and simplify wiring layouts.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e FA14040C\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 40 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 1\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 277 V\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis 277-volt circuit breaker is purpose-built for commercial or light industrial applications where 277 V systems power essential loads such as lighting, control circuits, and select equipment. The 1-pole design provides dedicated protection for a single branch circuit, making it a practical choice for spaces where panel density matters and quick, straightforward replacements are valued.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey benefits and use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003ePrecise overcurrent protection for a 277 V branch circuit, helping prevent damage from overloads without interrupting adjacent circuits.\u003c\/li\u003e \u003cli\u003eSpace-efficient 1-pole format that fits neatly into standard Square D panels and compatible enclosures.\u003c\/li\u003e \u003cli\u003eIdeal for commercial lighting runs, small control circuits, and other 277 V applications within office buildings, retail spaces, and light industrial environments.\u003c\/li\u003e \u003cli\u003eSimple identification via clear part number (FA14040C) and consistent Square D design for quick inspections and maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy choose this FA14040C breaker over alternatives?\u003c\/strong\u003e It delivers dedicated protection tailored to 277 V circuits in a compact, single-pole package from a trusted manufacturer. When you need reliable interruption at the right voltage and amperage for a specific branch, this Square D model offers a straightforward upgrade path or replacement in existing systems, minimizing downtime and keeping critical electrical loads protected.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003ePractical guidance\u003c\/strong\u003e — match this breaker to a compatible Square D panel or enclosure designed for FA-series devices, verify the circuit load aligns with the 40 A rating, and ensure proper torque and installation procedures during replacement. For best results, plan replacements in pairs or groups when upgrading an entire sub-panel or several feeders in a single project, ensuring consistent protection across the system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46423236509858,"sku":"FA14040C","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_229276d9-908d-46df-93e5-6fe31866e0ff.png?v=1765492975","url":"https:\/\/www.ampstate.com\/products\/square-d-fa14040c","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}