{"product_id":"square-d-ljl36400u33x-400a-600v-3-pole-circuit-breaker","title":"Square D LJL36400U33X - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D LJL36400U33X—a 400 A, 600 V, 3-pole molded case circuit breaker engineered to deliver dependable branch-circuit overcurrent and short-circuit protection in panelboards and loadcenters. Designed for residential, commercial, and light industrial environments, this unit helps you safeguard critical circuits with precise, reliable performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmpacity and voltage\u003c\/strong\u003e: 400 A rated, 600 V withstand capability for high-demand feeders and larger branch circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole design\u003c\/strong\u003e: Ensures simultaneous disconnection of all conductors in 3-phase systems, enhancing safety and trip assurance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e: Delivers stable, repeatable protection by responding promptly to both overloads and short circuits, with trip characteristics that adapt to varying load conditions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded-case construction\u003c\/strong\u003e: Efficiently uses panel space, helping you fit this protection device into crowded or compact panelboards without sacrificing performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e OEM compatibility\u003c\/strong\u003e: Compatible with matching Square D OEM loadcenters and panelboards, supporting worry-free replacement and reliable fitment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e Versatile applications\u003c\/strong\u003e: A solid choice for branch-circuit protection in residential service panels, light commercial installations, and select industrial panels that require robust 400 A protection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this 3-pole molded case breaker stands out: it combines a high current rating with a compact form factor, enabling you to protect large lighting, motor, and power distribution circuits in a single, easy-to-service device. The thermal-magnetic trip mechanism reduces nuisance tripping in environments with variable loads, while the guaranteed compatibility with Square D panel systems simplifies selection and maintenance for installers and facility managers alike.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eFeeding high-demand branch circuits in commercial or light-industrial panelboards\u003c\/li\u003e \u003cli\u003eMain or sub-feed protection for large electrical rooms and service panels\u003c\/li\u003e \u003cli\u003eReplacement in OEM Square D loadcenters where a 3-pole, 400 A breaker is required\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical snapshot\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Square D\u003c\/li\u003e \u003cli\u003ePart number: LJL36400U33X\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003ePoles: 3\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Square D LJL36400U33X in your panel, you gain a dependable, high-capacity protection solution that fits seamlessly into compatible Square D systems and workflows. For installers and facility teams looking to maintain safe, reliable electrical distribution while optimizing panel space, this breaker offers a precise balance of capacity, protection, and compatibility.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355326468258,"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_f58926e3-9a29-46be-9fb3-2ea3fbeed108.png?v=1764691357","url":"https:\/\/www.ampstate.com\/products\/square-d-ljl36400u33x-400a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}