{"product_id":"square-d-kcb34150-150a-480v-3-pole-plug-in-circuit-breaker","title":"Square D KCB34150 - 150 A, 480 V, 3-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eSquare D KCB34150 is a 150A, 480V, 3-pole plug-in molded case circuit breaker designed to deliver dependable branch-circuit overcurrent and short-circuit protection in panelboards and load centers. Available from AmpState, this breaker is built for fast, reliable protection in demanding electrical environments.\u003c\/p\u003e \u003ch3\u003eFast, field-ready protection with plug-in convenience\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePlug-in mounting enables rapid installation and seamless replacement, reducing downtime during servicing or panel upgrades.\u003c\/li\u003e \u003cli\u003eThermal-magnetic trip unit provides stable, repeatable protection by combining thermal overload sensing with magnetic short-circuit tripping for immediate response to severe faults.\u003c\/li\u003e \u003cli\u003e3-pole design in a 150A, 480V configuration ensures balanced protection for three-phase circuits common in commercial and light industrial systems.\u003c\/li\u003e \u003cli\u003eDesigned to be compatible with matching OEM load centers and panelboards, delivering a consistent fit and reliable electrical performance within your distribution system.\u003c\/li\u003e \u003cli\u003eVersatile across residential, commercial, and light industrial applications—ideal for protecting feeders, motors, and distribution circuits in panelboards and load centers.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy the KCB34150 stands out for 480V, three-phase systems\u003c\/h3\u003e\n\u003cp\u003eThis plug-in breaker emphasizes straightforward installation and dependable protection without the complexity of bolt-on variants. The thermal-magnetic trip unit adapts to load variations while guarding against short circuits, helping prevent equipment damage and nuisance trips. Its 480V rating makes it suitable for three-phase power distribution, where reliable coordination with your protection strategy is essential.\u003c\/p\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Square D\u003c\/li\u003e \u003cli\u003ePart Number: KCB34150\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 150A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 480V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 3\u003c\/li\u003e \u003cli\u003eMounting Style: Plug-in\u003c\/li\u003e \u003cli\u003eApplications: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eBest-use scenarios and practical insights\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eIdeal for new installations or panel upgrades in commercial spaces, industrial facilities, and multimetered residential buildings with 480V three-phase distribution.\u003c\/li\u003e \u003cli\u003eExcellent choice for protecting feeders and motors in load centers that require quick plug-in replacement to minimize downtime during maintenance.\u003c\/li\u003e \u003cli\u003eWhen selecting a breaker, ensure your panelboard is compatible with the KCB34150’s plug-in form factor and that the 150A, 480V, 3-pole configuration matches your circuit design.\u003c\/li\u003e \u003cli\u003eFor replacement projects, confirm consistent three-phase wiring and a matching OEM load center fit to maintain dependable trip performance and electrical coordination.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355312541858,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/schnieder_and_square_d_breaker_and_panel_413090d9-a940-4a05-9527-1df68d51236c.png?v=1764691218","url":"https:\/\/www.ampstate.com\/products\/square-d-kcb34150-150a-480v-3-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}