{"product_id":"fa36045-square-d-molded-case-circuit-breaker-i-line-plug-in-45-amp-3-pole-600-volt","title":"Square D FA36045 Molded Case Circuit Breaker | I-Line Plug-In | 45A 3-Pole 600V","description":"\u003cdiv class=\"product-description\"\u003e\n\n  \u003ch2\u003eSquare D FA36045 – 45 Amp 3-Pole 600V I-Line Molded Case Circuit Breaker\u003c\/h2\u003e\n\n  \u003cp\u003eThe \u003cstrong\u003eSquare D FA36045\u003c\/strong\u003e is a heavy-duty \u003cstrong\u003ethermal magnetic molded case circuit breaker (MCCB)\u003c\/strong\u003e engineered for reliable overcurrent and short-circuit protection in demanding industrial and commercial power distribution systems. With a \u003cstrong\u003e45-amp continuous rating\u003c\/strong\u003e, \u003cstrong\u003e3-pole configuration\u003c\/strong\u003e, and \u003cstrong\u003e600-volt maximum voltage\u003c\/strong\u003e, this breaker is purpose-built for three-phase electrical panels using Square D's I-Line plug-in bus system.\u003c\/p\u003e\n\n  \u003cp\u003eSourced by \u003cstrong\u003eAlpha Brokers \u0026amp; Controls\u003c\/strong\u003e, the FA36045 is available in \u003cstrong\u003enew condition\u003c\/strong\u003e and ships ready for immediate deployment — ideal for MRO procurement, panel upgrades, and critical infrastructure replacements.\u003c\/p\u003e\n\n  \u003chr\u003e\n\n  \u003ch2\u003eKey Specifications\u003c\/h2\u003e\n  \u003ctable\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eSquare D (Schneider Electric)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eFA36045\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eFA36045-N (New)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAmpere Rating\u003c\/td\u003e\n\u003ctd\u003e45A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eNumber of Poles\u003c\/td\u003e\n\u003ctd\u003e3-Pole\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVoltage Rating\u003c\/td\u003e\n\u003ctd\u003e600V AC \/ 250V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eBreaker Type\u003c\/td\u003e\n\u003ctd\u003eMolded Case Circuit Breaker (MCCB)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTrip Type\u003c\/td\u003e\n\u003ctd\u003eThermal Magnetic\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTrip Functions\u003c\/td\u003e\n\u003ctd\u003eLong Time \u0026amp; Instantaneous\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eConnection Type\u003c\/td\u003e\n\u003ctd\u003eI-Line Plug-In\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eInterrupting Rating – 120\/240V AC\u003c\/td\u003e\n\u003ctd\u003e25 kAIC\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eInterrupting Rating – 277\/480V AC\u003c\/td\u003e\n\u003ctd\u003e18 kAIC\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eInterrupting Rating – 347\/600V AC\u003c\/td\u003e\n\u003ctd\u003e14 kAIC\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eInterrupting Rating – 250V DC\u003c\/td\u003e\n\u003ctd\u003e10 kAIC\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eFA (I-Line)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003chr\u003e\n\n  \u003ch2\u003eWhat Is the Square D FA36045?\u003c\/h2\u003e\n  \u003cp\u003eThe FA36045 belongs to Square D's \u003cstrong\u003eFA-frame I-Line series\u003c\/strong\u003e — a line of molded case circuit breakers specifically designed to plug directly into Square D I-Line panelboards and switchboards without the need for bolt-on connections. This \u003cstrong\u003eplug-in design\u003c\/strong\u003e significantly reduces installation time, simplifies panel maintenance, and ensures a consistent, secure electrical connection every time.\u003c\/p\u003e\n\n  \u003cp\u003eThe \u003cstrong\u003ethermal magnetic trip mechanism\u003c\/strong\u003e provides dual-mode protection: \u003cem\u003elong-time thermal protection\u003c\/em\u003e guards against sustained overloads, while \u003cem\u003einstantaneous magnetic protection\u003c\/em\u003e responds immediately to dangerous short-circuit faults — protecting equipment, wiring, and personnel.\u003c\/p\u003e\n\n  \u003chr\u003e\n\n  \u003ch2\u003eWhy Choose the FA36045?\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eI-Line Plug-In Convenience:\u003c\/strong\u003e Tool-free installation on compatible Square D I-Line bus systems — no bolt-on required.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWide Voltage Range:\u003c\/strong\u003e Rated for up to 600V AC, covering the full range of North American industrial voltages including 208V, 240V, 480V, and 600V three-phase systems.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDual Trip Protection:\u003c\/strong\u003e Thermal magnetic design protects against both overloads and short circuits simultaneously.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProven Square D Reliability:\u003c\/strong\u003e Engineered by Schneider Electric, one of the world's leading electrical equipment manufacturers, to UL 489 standards.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNew Condition:\u003c\/strong\u003e Ships as new — full service life, no derating required.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFast Availability:\u003c\/strong\u003e In-stock at Alpha Brokers \u0026amp; Controls for prompt fulfillment.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr\u003e\n\n  \u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eSquare D I-Line panelboards and switchboards\u003c\/li\u003e\n    \u003cli\u003eIndustrial motor branch circuit protection (up to 45A)\u003c\/li\u003e\n    \u003cli\u003eCommercial HVAC and mechanical equipment panels\u003c\/li\u003e\n    \u003cli\u003eThree-phase power distribution centers\u003c\/li\u003e\n    \u003cli\u003eManufacturing facility power panels\u003c\/li\u003e\n    \u003cli\u003eData center and critical infrastructure electrical systems\u003c\/li\u003e\n    \u003cli\u003ePanel upgrades and MRO (Maintenance, Repair \u0026amp; Operations) replacement\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr\u003e\n\n  \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n  \u003ch3\u003eWhat does FA36045 mean?\u003c\/h3\u003e\n  \u003cp\u003eThe part number breaks down as follows: \u003cstrong\u003eFA\u003c\/strong\u003e = FA-frame I-Line series, \u003cstrong\u003e3\u003c\/strong\u003e = 3-pole, \u003cstrong\u003e6\u003c\/strong\u003e = 600V rated, \u003cstrong\u003e045\u003c\/strong\u003e = 45-amp rating. It is a Square D thermal magnetic molded case circuit breaker with I-Line plug-in termination.\u003c\/p\u003e\n\n  \u003ch3\u003eIs the FA36045 the same as a bolt-on breaker?\u003c\/h3\u003e\n  \u003cp\u003eNo. The FA36045 uses Square D's \u003cstrong\u003eI-Line plug-in connection\u003c\/strong\u003e, which installs directly onto the I-Line bus without bolts. It is not interchangeable with standard bolt-on breakers. Verify your panelboard is an I-Line-compatible model before ordering.\u003c\/p\u003e\n\n  \u003ch3\u003eWhat is the interrupting rating of the FA36045?\u003c\/h3\u003e\n  \u003cp\u003eThe FA36045 carries interrupting ratings of \u003cstrong\u003e25 kAIC at 120\/240V AC\u003c\/strong\u003e, \u003cstrong\u003e18 kAIC at 277\/480V AC\u003c\/strong\u003e, \u003cstrong\u003e14 kAIC at 347\/600V AC\u003c\/strong\u003e, and \u003cstrong\u003e10 kAIC at 250V DC\u003c\/strong\u003e.\u003c\/p\u003e\n\n  \u003ch3\u003eWhat panelboards is the FA36045 compatible with?\u003c\/h3\u003e\n  \u003cp\u003eThe FA36045 is compatible with Square D \u003cstrong\u003eI-Line panelboards and switchboards\u003c\/strong\u003e that accept FA-frame plug-in breakers. Common compatible lines include Square D NF, I-Line, and certain PowerPact enclosures. Always verify frame and bus compatibility with your specific panel model.\u003c\/p\u003e\n\n  \u003ch3\u003eDoes this breaker come new or refurbished?\u003c\/h3\u003e\n  \u003cp\u003eAlpha Brokers \u0026amp; Controls offers the FA36045 in \u003cstrong\u003enew (FA36045-N) condition\u003c\/strong\u003e, ensuring full rated service life with no prior usage.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Square D \/ Schneider Electric","offers":[{"title":"New","offer_id":48396207423736,"sku":"FA36045-N","price":774.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/1209\/3176\/files\/g7mXzBwB-FA34025-N-2T-2-Medium_e7efd8b4-b51f-4e06-829b-c36cd757fffa.jpg?v=1778795186","url":"https:\/\/alphabreakersandcontrols.com\/products\/fa36045-square-d-molded-case-circuit-breaker-i-line-plug-in-45-amp-3-pole-600-volt","provider":"Alpha Breakers \u0026 Controls","version":"1.0","type":"link"}