{"product_id":"square-d-fal12040-circuit-breaker","title":"Square D | FAL12040 | Circuit Breaker | 40A | 1-Pole | 120V | 10kA | Feed-Through","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D FAL12040 — a purpose-built 40A, 1-Pole, 120V circuit breaker crafted for reliability in maintenance, retrofit, and replacement projects where exact specs matter. When your panel calls for a precise fit, this model delivers consistent protection with a focus on real-world use.\u003c\/p\u003e \u003cp\u003eThe Feed-Through design adds versatile wiring options, allowing you to protect the primary circuit while efficiently routing downstream circuits. With a robust 10kA interrupting capacity, it stands up to higher fault currents often encountered in mixed residential and light commercial environments, giving you peace of mind when critical loads are connected.\u003c\/p\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 40A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 1-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 120V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eInterrupting Rating:\u003c\/strong\u003e 10kA\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Feed-Through\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this FAL12040 matters for your project\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eExact fit for Square D panels that require a FAL-series 1-pole, 40A, 120V device, ensuring reliable trip performance without modifications.\u003c\/li\u003e \u003cli\u003eFeed-Through capability streamlines wiring when you need to feed additional circuits or subfeeds while maintaining solid overcurrent protection.\u003c\/li\u003e \u003cli\u003ePart number FAL12040 serves as the most reliable reference for compatibility, reducing guesswork during replacements and retrofits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRetrofit and replacement in residential panels where a precise 40A, 1-pole, 120V breaker is required\u003c\/li\u003e \u003cli\u003eMaintenance scenarios in legacy Square D installations that demand exact form factor and trip characteristics\u003c\/li\u003e \u003cli\u003eSubfeed configurations in panels designed to leverage feed-through protection for organized, scalable wiring\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and compatibility tips\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, verify fit and ratings against your panel’s labeling. Use the part number FAL12040 as your compatibility anchor to ensure you’re selecting a breaker that matches the panel’s design and protection requirements. For best results, follow panel manufacturer guidelines and ensure the device is mounted in the correct slot with secure, torque-appropriate terminations.\u003c\/p\u003e \u003cp\u003eIn practice, the Square D FAL12040 is a precise, proven solution for electricians and homeowners upgrading or maintaining panels that demand a dependable 40A, 1-pole, 120V device with the flexibility of feed-through wiring. It delivers predictable protection, clean wiring integration, and a straightforward path to compliant, safer electrical systems.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46424500699298,"sku":"FAL12040","price":479.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-fal12040-circuit-breaker-40a-1-pole-120v-10ka-feed-through-965.webp?v=1789372783","url":"https:\/\/www.ampstate.com\/products\/square-d-fal12040-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}