{"product_id":"fh36020-square-d-molded-case-circuit-breaker-i-line-plug-in-20-amp-3-pole-600-volt","title":"Square D FH36020 Molded Case Circuit Breaker – 20A 3-Pole 600V I-Line Plug-In | F-Frame MCCB","description":"\u003ch2\u003eSquare D FH36020 – 20A 3-Pole 600V Molded Case Circuit Breaker (I-Line Plug-In)\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eSquare D FH36020\u003c\/strong\u003e is a heavy-duty, thermal-magnetic \u003cstrong\u003emolded case circuit breaker (MCCB)\u003c\/strong\u003e engineered for dependable overcurrent and short-circuit protection in commercial and industrial power distribution systems. Part of Square D's F-Frame I-Line series by Schneider Electric, this 3-pole, 20-amp breaker delivers consistent, code-compliant protection across three-phase 600VAC applications.\u003c\/p\u003e\n\n\u003cp\u003eIts \u003cstrong\u003eI-Line plug-in mounting\u003c\/strong\u003e enables fast, tool-assisted installation into compatible Square D I-Line panelboards and switchboards — minimizing downtime during installation, maintenance, or replacement in live electrical environments.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCatalog Number:\u003c\/strong\u003e FH36020\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Square D \/ Schneider Electric\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmpere Rating:\u003c\/strong\u003e 20A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 3-Pole (Three-Phase)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 600VAC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e F-Frame\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrip Type:\u003c\/strong\u003e Thermal-Magnetic (LI – Long-Time \u0026amp; Instantaneous)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting Style:\u003c\/strong\u003e I-Line Style Plug-In\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInterrupting Capacity:\u003c\/strong\u003e 65 kA @ 240V | 25 kA @ 480V | 18 kA @ 600V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 40°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e 50\/60 Hz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e UL Listed, CSA Certified\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New (SKU: FH36020-N)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat Is the Square D FH36020?\u003c\/h3\u003e\n\u003cp\u003eThe FH36020 is an F-Frame molded case circuit breaker designed for three-phase industrial and commercial power systems operating at up to 600 volts AC. It uses a dual-function \u003cstrong\u003ethermal-magnetic trip mechanism\u003c\/strong\u003e that responds to sustained overloads via long-time protection and instantaneous short-circuit faults — providing two layers of protection for equipment, wiring, and personnel.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose the I-Line Plug-In Design?\u003c\/h3\u003e\n\u003cp\u003eThe I-Line plug-in format is a hallmark of Square D's modular panel system. It allows circuit breakers to be safely installed and removed from energized I-Line panelboards with minimal tools and effort — a critical advantage in industrial maintenance environments where avoiding downtime is essential. No bus bar connections to torque, no additional hardware.\u003c\/p\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIndustrial motor branch circuit protection\u003c\/li\u003e\n  \u003cli\u003eCommercial and industrial electrical distribution panels\u003c\/li\u003e\n  \u003cli\u003eManufacturing and process control equipment\u003c\/li\u003e\n  \u003cli\u003eHVAC systems and mechanical equipment feeders\u003c\/li\u003e\n  \u003cli\u003eData centers and critical power infrastructure\u003c\/li\u003e\n  \u003cli\u003eSquare D I-Line panelboard and switchboard systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatibility \u0026amp; Replacement Information\u003c\/h3\u003e\n\u003cp\u003eThe FH36020 is compatible with \u003cstrong\u003eSquare D I-Line style panelboards and switchboards\u003c\/strong\u003e. For newer installations, this model has been superseded by the \u003cstrong\u003eBGA36020\u003c\/strong\u003e or \u003cstrong\u003eHGA36020\u003c\/strong\u003e. Contact our team to confirm compatibility with your existing panel configuration before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eCondition \u0026amp; Quality Assurance\u003c\/h3\u003e\n\u003cp\u003eThis unit is sold as \u003cstrong\u003eNew\u003c\/strong\u003e (SKU: FH36020-N). Each breaker is inspected prior to shipment by our team at Alpha Brokers \u0026amp; Controls to ensure full operational integrity and proper packaging.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat does FH36020 mean?\u003c\/strong\u003e\u003cbr\u003eThe FH36020 catalog number breaks down as follows: F = F-Frame, H = 600V rated, 3 = 3-pole, 6 = 600V class, 020 = 20 amp rating. It is manufactured by Square D (Schneider Electric).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs the FH36020 still in production?\u003c\/strong\u003e\u003cbr\u003eThe FH36020 has been superseded by newer Square D models such as the BGA36020 or HGA36020. However, new units remain available through authorized distributors and specialty electrical brokers like Alpha Brokers \u0026amp; Controls.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat panelboards is the FH36020 compatible with?\u003c\/strong\u003e\u003cbr\u003eThe FH36020 is designed for use with Square D I-Line style panelboards and switchboards. Verify your panel's bus system before installing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the interrupting rating of the FH36020?\u003c\/strong\u003e\u003cbr\u003eThe FH36020 has an interrupting capacity of 65 kA at 240V, 25 kA at 480V, and 18 kA at 600V — meeting the demands of most commercial and light industrial short-circuit scenarios.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eSold by Alpha Brokers \u0026amp; Controls — your trusted source for new, hard-to-find, and industrial-grade electrical components.\u003c\/em\u003e\u003c\/p\u003e","brand":"Square D \/ Schneider Electric","offers":[{"title":"New","offer_id":48396207587576,"sku":"FH36020-N","price":519.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/1209\/3176\/files\/FH36020-1.jpg?v=1778795192","url":"https:\/\/alphabreakersandcontrols.com\/products\/fh36020-square-d-molded-case-circuit-breaker-i-line-plug-in-20-amp-3-pole-600-volt","provider":"Alpha Breakers \u0026 Controls","version":"1.0","type":"link"}