{"product_id":"fc34100-square-d-molded-case-circuit-breakers-i-line-style-plug-in-100-amp-3-pole-480-volt","title":"Square D FC34100 Circuit Breaker | 100A 3-Pole 480V I-Line Plug-In","description":"\u003ch2\u003eSquare D FC34100 — 100 Amp 3-Pole Molded Case Circuit Breaker\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eSquare D FC34100\u003c\/strong\u003e is a heavy-duty \u003cstrong\u003emolded case circuit breaker (MCCB)\u003c\/strong\u003e engineered for reliable overcurrent protection in commercial and industrial power distribution systems. With a \u003cstrong\u003e100-amp continuous rating\u003c\/strong\u003e, \u003cstrong\u003e3-pole configuration\u003c\/strong\u003e, and \u003cstrong\u003e480V AC voltage rating\u003c\/strong\u003e, this breaker is a trusted solution for protecting motors, panels, and critical electrical equipment.\u003c\/p\u003e\n\n\u003cp\u003eDesigned for use with \u003cstrong\u003eSquare D I-Line switchboards and panelboards\u003c\/strong\u003e, the FC34100 features a plug-in connection type that simplifies installation and replacement without the need for field wiring modifications. Its compact frame and rugged construction meet the demands of heavy commercial and light industrial environments.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e FC34100\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Square D (Schneider Electric)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Molded Case Circuit Breaker (MCCB)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStyle:\u003c\/strong\u003e I-Line Plug-In\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 100A (100 Amps)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 480V AC (480VAC)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInterrupting Rating:\u003c\/strong\u003e 65kAIC at 480V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrip Function:\u003c\/strong\u003e LI — Long-Time and Instantaneous\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrip Type:\u003c\/strong\u003e Thermal Magnetic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Type:\u003c\/strong\u003e I-Line Style Plug-In\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat Is an I-Line Style Plug-In Circuit Breaker?\u003c\/h2\u003e\n\u003cp\u003eAn \u003cstrong\u003eI-Line style plug-in circuit breaker\u003c\/strong\u003e is designed specifically for Square D I-Line panelboards and switchboards. Unlike standard bolt-on breakers, I-Line breakers slide into position and connect through a built-in stab-on mechanism, enabling \u003cstrong\u003efaster installation, cleaner wiring, and easy field replacement\u003c\/strong\u003e — a major advantage in industrial maintenance environments.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose the Square D FC34100?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProven Performance:\u003c\/strong\u003e Thermal magnetic trip technology ensures accurate, responsive protection against overloads and short circuits\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e65kAIC Interrupting Capacity:\u003c\/strong\u003e Handles high-fault currents common in 480V industrial systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eI-Line Compatibility:\u003c\/strong\u003e Drop-in replacement for any Square D I-Line panelboard — no rewiring required\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3-Pole Design:\u003c\/strong\u003e Ideal for three-phase loads including motors, HVAC equipment, and industrial machinery\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUL Listed:\u003c\/strong\u003e Meets North American safety and performance standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon Applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eIndustrial motor control centers (MCC)\u003c\/li\u003e\n  \u003cli\u003eCommercial and industrial panelboards\u003c\/li\u003e\n  \u003cli\u003eHVAC and mechanical equipment protection\u003c\/li\u003e\n  \u003cli\u003eManufacturing and process equipment\u003c\/li\u003e\n  \u003cli\u003eSquare D I-Line switchboard systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAvailable Conditions\u003c\/h2\u003e\n\u003cp\u003eThis product is available in \u003cstrong\u003eNew\u003c\/strong\u003e and \u003cstrong\u003eUsed\/Tested\u003c\/strong\u003e condition. All used units are inspected and tested before shipment to ensure full functionality and compliance with original specifications.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat does FC34100 mean?\u003c\/strong\u003e\u003cbr\u003e\nThe FC34100 model number indicates: FC = I-Line frame, 3 = 3-pole, 4 = 480V class, 100 = 100-amp rating. It is part of Square D's FC-frame breaker line manufactured by Schneider Electric.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs the Square D FC34100 still available?\u003c\/strong\u003e\u003cbr\u003e\nYes. The FC34100 is available new from authorized distributors and as tested surplus stock. It remains compatible with Square D I-Line panelboard systems still in active service.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan the FC34100 be used as a direct replacement?\u003c\/strong\u003e\u003cbr\u003e\nYes. The FC34100 is a direct plug-in replacement for any Square D I-Line panelboard accepting a 100A, 3-pole, 480V breaker with I-Line connection style.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the interrupting rating of the FC34100?\u003c\/strong\u003e\u003cbr\u003e\nThe FC34100 has an interrupting rating of \u003cstrong\u003e65,000 AIC (65kAIC)\u003c\/strong\u003e at 480V AC, suitable for most commercial and industrial distribution systems.\u003c\/p\u003e","brand":"Square D \/ Schneider Electric","offers":[{"title":"New","offer_id":48396207522040,"sku":"FC34100-N","price":659.99,"currency_code":"USD","in_stock":true},{"title":"Used","offer_id":48396207554808,"sku":"FC34100-U","price":534.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/1209\/3176\/files\/Photoroom_20260216_010631.jpg?v=1778795190","url":"https:\/\/alphabreakersandcontrols.com\/products\/fc34100-square-d-molded-case-circuit-breakers-i-line-style-plug-in-100-amp-3-pole-480-volt","provider":"Alpha Breakers \u0026 Controls","version":"1.0","type":"link"}