{"product_id":"square-d-fa32040-40a-3-pole-plug-in-circuit-breaker","title":"Square D FA32040 - 40 A, 3-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eWhen you need dependable overcurrent protection for panelboards and load centers, the Square D FA32040 40A 3-Pole Plug-In Molded-Case Circuit Breaker delivers fast, reliable performance you can trust. Designed for quick installation and straightforward replacement, this plug-in breaker slips into compatible OEM Square D load centers, minimizing downtime and maintenance hassles.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFast plug-in connection\u003c\/strong\u003e — rapid installation and effortless swap-outs keep your electrical work efficient and downtime minimal.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e — combines precise thermal sensing with instantaneous magnetic trip, providing stable protection against sustained overloads and short circuits while reducing nuisance trips.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e — engineered to align seamlessly with matching Square D load centers and panelboards for reliable performance and proper fit.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e — well-suited for residential upgrades, commercial installations, and light industrial circuits that require dependable 3-pole protection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical snapshot\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Square D\u003c\/li\u003e \u003cli\u003ePart Number: FA32040\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded-case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 40 A\u003c\/li\u003e \u003cli\u003eNumber of Poles: 3\u003c\/li\u003e \u003cli\u003eMounting Style: Plug-in\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIdeal use cases and scenarios:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eReplacing a failed or tripped 40A, 3-pole breaker in an existing panelboard or load center with a plug-in unit designed for quick, accurate swap-out.\u003c\/li\u003e \u003cli\u003eProviding 3-pole protection for 3-phase or multi-wire circuits in small commercial settings, ensuring compatible protection curves within the Square D ecosystem.\u003c\/li\u003e \u003cli\u003eUpgrading residential service panels to safer, more reliable protection for multi-wire branch circuits and shared-neutral configurations.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this matters for safety, reliability, and long-term maintenance:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eThe thermal-magnetic trip technology delivers repeatable, predictable protection, helping to safeguard wiring and connected equipment from both overloads and short circuits.\u003c\/li\u003e \u003cli\u003eThe plug-in design reduces service disruption during inspections or panel upgrades by eliminating complex wiring changes in compatible panels.\u003c\/li\u003e \u003cli\u003eOEM compatibility ensures consistent interrupting ratings and trip performance, aligning with your existing Square D equipment for cohesive system protection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWho should consider the Square D FA32040?\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eElectricians and maintenance professionals overseeing residential, commercial, or light industrial panelboards.\u003c\/li\u003e \u003cli\u003eFacility managers seeking easy-to-service, widely available replacement parts with proven compatibility.\u003c\/li\u003e \u003cli\u003eHomeowners performing panel upgrades who want a reliable 3-pole protection solution that fits standard Square D load centers.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical tips for optimal use:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eVerify that your panelboard is compatible with plug-in FA-series breakers from Square D before installation.\u003c\/li\u003e \u003cli\u003eKeep spare FA32040 units on hand for quick replacements in service panels, reducing downtime during maintenance windows.\u003c\/li\u003e \u003cli\u003eSchedule periodic inspections to confirm the trip unit is functioning properly and that the panel environment remains clean and dry for optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355218825378,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/schnieder_and_square_d_breaker_and_panel_a45ec2db-0c43-43f8-89d6-8384a5c9d763.png?v=1764690473","url":"https:\/\/www.ampstate.com\/products\/square-d-fa32040-40a-3-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}