{"product_id":"square-d-fa340901037-90a-480v-3-pole-plug-in-circuit-breaker","title":"Square D FA340901037 - 90 A, 480 V, 3-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D FA340901037 is a 90A, 480V, 3-pole plug-in molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Engineered for fast installs and straightforward replacements, it keeps your electrical systems safe with precise, repeatable protection performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFast plug-in connection\u003c\/strong\u003e enables quick installation and effortless replacement, reducing downtime during servicing or upgrades.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable overload protection with rapid, coordinated response to short circuits, delivering consistent protection over time.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e ensures reliable fit and operation with matching Square D load centers and panelboards, preserving system integrity and listing.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile for multiple settings\u003c\/strong\u003e suitable for residential, commercial, and light industrial applications where 3-pole 480V protection is required.\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: FA340901037\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 90A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 480V\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\u003eWhy it matters: In commercial and light industrial environments, protecting expensive equipment and ensuring continuity hinges on reliable, fast-acting breakers. The 3-pole configuration supports balanced three-phase distribution for 480V systems, delivering coordinated trips across all phases when anomalies occur. This minimizes damage, reduces downtime, and enhances overall safety.\u003c\/p\u003e \u003cp\u003ePractical guidance: Use only with compatible Square D load centers and panelboards to maintain proper compatibility and safety certifications. When replacing, follow standard electrical safety practices, verify system power is isolated, and confirm the panel’s compatibility with plug-in molded case breakers before installation. For ongoing protection, pair this breaker with appropriately rated feeders and conduct regular inspections of panel hardware.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355220594850,"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_e954ea4d-783b-45a4-b690-b65e9d8d4c8e.png?v=1764690489","url":"https:\/\/www.ampstate.com\/products\/square-d-fa340901037-90a-480v-3-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}