{"product_id":"square-d-fcj34045-circuit-breaker","title":"Square D | FCJ34045 | Circuit Breaker | 45A | 3-Pole | 480V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D FCJ34045 Circuit Breaker — a genuine, industrial-grade protective device built for 480V three-phase systems. With a 45A rating and a 3-pole configuration, this breaker delivers dependable protection for demanding equipment, ensuring that motor drives, feeders, and critical loads stay safeguarded during operation and maintenance alike.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 45A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 480V\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eImportant compatibility note:\u003c\/strong\u003e Confirm fit and ratings before ordering. The FCJ34045 part number is the best reference for compatibility with your Square D panels and a 480V three-phase setup.\u003c\/p\u003e \u003cp\u003eWhy choose the Square D FCJ34045 for your project? This circuit breaker is purpose-built for maintenance, retrofit, and replacement scenarios where precise specifications matter. It provides reliable overcurrent protection across all three live conductors, helping you prevent equipment damage, minimize downtime, and maintain safe electrical distributions in industrial environments.\u003c\/p\u003e \u003cp\u003eIdeal use cases include:\n\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eRoutine maintenance on 480V three-phase distribution circuits\u003c\/li\u003e \u003cli\u003eRetrofit projects where existing protection must match exact amperage, pole, and voltage specs\u003c\/li\u003e \u003cli\u003eReplacement of failed breakers in Square D panels that require FCJ34045 compatibility\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical considerations for installation and use:\n\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eVerify panel compatibility by referencing the FCJ34045 part number against your current breaker lineup\u003c\/li\u003e \u003cli\u003eEnsure the surrounding electrical system is de-energized and follow all safety protocols during replacement\u003c\/li\u003e \u003cli\u003eUse in environments where 480V three-phase protection is required, such as industrial machinery, manufacturing lines, and heavy-load feeders\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned with the reliability you expect from Square D, the FCJ34045 helps you maintain consistent protection for critical loads in high-voltage, three-phase applications. If your project demands a precise 45A, 3-pole, 480V interrupting device, this breaker is a dependable, compatible choice that aligns with industry standards and installation best practices.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46426382631074,"sku":"FCJ34045","price":2010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/square-d-fcj34045-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}