{"product_id":"square-d-fa14040a-40a-1-pole-plug-in-circuit-breaker","title":"Square D FA14040 A - 40 A, 1-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D FA14040A is a 40A, 1-pole plug-in molded case circuit breaker designed to safeguard your electrical system with precise, reliable protection. Built for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers, this unit is ready for fast, straightforward installations and quick replacements when you need them most.\u003c\/p\u003e \u003ch3\u003eWhy choose the FA14040A for your electrical panel?\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFast plug-in connection\u003c\/strong\u003e enables rapid installation and streamlined service calls, reducing downtime when you’re upgrading or replacing breakers.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection across varying loads and ambient conditions, helping to prevent nuisance trips while still reacting quickly to faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e1-pole, 40A design\u003c\/strong\u003e is ideal for single-phase branch circuits that demand robust protection without unnecessary complexity.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e compatibility with matching Square D load centers and panelboards ensures a proper fit and predictable performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile across settings\u003c\/strong\u003e suitable for residential, commercial, and light industrial environments, from home upgrades to small office panels and shop equipment.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat problems does it solve?\u003c\/h3\u003e\n\u003cp\u003eBy providing precise overcurrent and short-circuit protection, the FA14040A helps prevent wiring damage, fire hazards, and equipment downtime. Its thermal-magnetic trip mechanism balances fast response to short circuits with stable protection for normal operation, reducing the risk of unnecessary outages while maintaining safety.\u003c\/p\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number\u003c\/strong\u003e: FA14040A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Thermal-magnetic molded case circuit breaker (MCCB)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 40 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles\u003c\/strong\u003e: 1\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting style\u003c\/strong\u003e: Plug-in\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTypical applications\u003c\/strong\u003e: Branch circuit overcurrent and short-circuit protection in panelboards and load centers\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplacing a failed or aged 40A single-pole breaker in residential panels.\u003c\/li\u003e \u003cli\u003eAdding or upgrading a 40A branch circuit in a small commercial panelboard.\u003c\/li\u003e \u003cli\u003eRetrofits for light industrial setups where quick plug-in installation minimizes downtime.\u003c\/li\u003e \u003cli\u003eCustom electrical projects requiring reliable, OEM-compatible protection in Square D environments.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned with real-world electrical needs in mind, the FA14040A offers a practical blend of speed, reliability, and compatibility. Whether you’re performing a routine panel upgrade or wiring a new circuit from the breaker panel, this plug-in MCCB from Square D delivers predictable protection, straightforward installation, and long-term service continuity.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355215745186,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-fa14040-a-40-1-pole-plug-in-circuit-breaker-ampstate-439.webp?v=1788741977","url":"https:\/\/www.ampstate.com\/products\/square-d-fa14040a-40a-1-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}