{"product_id":"fh36045-square-d-molded-case-circuit-breakers-i-line-style-plug-in-45-amp-3-pole-600-v","title":"Square D FH36045 I-Line Molded Case Circuit Breaker | 45A 3-Pole 600V","description":"\u003cp\u003eSquare D FH36045 — I-Line Plug-In Molded Case Circuit Breaker\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSquare D FH36045\u003c\/strong\u003e is a high-performance, 3-pole thermal magnetic molded case circuit breaker engineered for demanding industrial and commercial power distribution systems. Designed for I-Line Style Plug-In panelboards, this breaker delivers reliable overcurrent protection with a 45-amp rating at 600V AC — backed by Square D's legacy of electrical engineering excellence.\u003c\/p\u003e\n\u003cp\u003eWhether you're upgrading an aging switchboard, replacing a failed breaker, or specifying new equipment for an industrial facility, the FH36045 provides the interrupting capacity, mounting compatibility, and thermal-magnetic protection your system demands.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e FH36045\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Square D (Schneider Electric)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame Type:\u003c\/strong\u003e FH (I-Line)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip Type:\u003c\/strong\u003e Thermal Magnetic, Non-Interchangeable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 3-Pole (3P \/ 3PH)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmpere Rating:\u003c\/strong\u003e 45A at 40°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 600V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type:\u003c\/strong\u003e I-Line Style Plug-In\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip Functions:\u003c\/strong\u003e Long-Time (L) \u0026amp; Instantaneous (I)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Location:\u003c\/strong\u003e Load End Terminals Standard\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eInterrupting Ratings (AIC)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e65 kA @ 240 VAC\u003c\/li\u003e\n\u003cli\u003e25 kA @ 480 VAC\u003c\/li\u003e\n\u003cli\u003e18 kA @ 600 VAC\u003c\/li\u003e\n\u003cli\u003e10 kA @ 250 VDC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe FH36045 carries a \u003cstrong\u003ehigh interrupting rating\u003c\/strong\u003e, making it suitable for installations with significant available fault current — a critical safety advantage in industrial environments.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Choose the Square D FH36045?\u003c\/h2\u003e\n\u003ch3\u003e✅ I-Line Plug-In Convenience\u003c\/h3\u003e\n\u003cp\u003eThe I-Line Style Plug-In design enables fast, tool-free installation and removal directly onto Square D I-Line panelboards and switchboards — reducing downtime during maintenance or replacement.\u003c\/p\u003e\n\u003ch3\u003e✅ Thermal Magnetic Protection\u003c\/h3\u003e\n\u003cp\u003eCombines thermal protection for sustained overloads with magnetic (instantaneous) protection for short-circuit faults — providing dual-layer defense for motors, feeders, and branch circuits.\u003c\/p\u003e\n\u003ch3\u003e✅ High Interrupting Capacity\u003c\/h3\u003e\n\u003cp\u003eWith up to 65 kA interrupting capacity at 240V, the FH36045 is rated for high-fault environments where standard breakers fall short.\u003c\/p\u003e\n\u003ch3\u003e✅ Industrial-Grade Reliability\u003c\/h3\u003e\n\u003cp\u003eBuilt by Square D — a Schneider Electric brand with over a century of electrical innovation — the FH36045 is trusted by electricians, engineers, and facility managers worldwide.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIndustrial power distribution panels\u003c\/li\u003e\n\u003cli\u003eCommercial switchboards\u003c\/li\u003e\n\u003cli\u003eMotor branch circuit protection (HVAC, pumps, compressors)\u003c\/li\u003e\n\u003cli\u003eFeeder circuit protection in manufacturing facilities\u003c\/li\u003e\n\u003cli\u003eI-Line panelboard upgrades and retrofits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is the Square D FH36045 used for?\u003c\/h3\u003e\n\u003cp\u003eThe FH36045 is used to provide overcurrent and short-circuit protection in 3-phase industrial and commercial electrical systems. It plugs directly into Square D I-Line style panelboards and switchboards rated for 600V AC.\u003c\/p\u003e\n\u003ch3\u003eWhat is the interrupting rating of the FH36045?\u003c\/h3\u003e\n\u003cp\u003eThe FH36045 has a high interrupting rating of 65 kA at 240V, 25 kA at 480V, and 18 kA at 600V AC.\u003c\/p\u003e\n\u003ch3\u003eIs the FH36045 compatible with I-Line panelboards?\u003c\/h3\u003e\n\u003cp\u003eYes. The FH36045 features an I-Line Style Plug-In connection, making it directly compatible with Square D I-Line panelboards and switchboards.\u003c\/p\u003e\n\u003ch3\u003eWhat is the ambient temperature rating of the FH36045?\u003c\/h3\u003e\n\u003cp\u003eThe FH36045 is rated at 40°C ambient temperature, which is standard for most indoor industrial and commercial enclosure environments.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between the FH, FA, and HGA Square D breakers?\u003c\/h3\u003e\n\u003cp\u003eAll three are Square D I-Line plug-in molded case breakers, but they differ in interrupting capacity. The FH frame offers a high interrupting rating (25 kA @ 480V), the FA frame provides a standard interrupting rating (14 kA @ 600V), and the HGA (Powerpact series) provides 35 kA @ 480V for higher fault current applications.\u003cem\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Square D \/ Schneider Electric","offers":[{"title":"New","offer_id":48396207784184,"sku":"FH36045-N","price":749.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/1209\/3176\/files\/FH36020-1-3_ff400198-eeba-4e61-8f39-8c798c8f406e.jpg?v=1778795196","url":"https:\/\/alphabreakersandcontrols.com\/products\/fh36045-square-d-molded-case-circuit-breakers-i-line-style-plug-in-45-amp-3-pole-600-v","provider":"Alpha Breakers \u0026 Controls","version":"1.0","type":"link"}