{"product_id":"square-d-ljl36400u31x-400a-600v-3-pole-circuit-breaker","title":"Square D LJL36400U31X - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Square D LJL36400U31X, a 400 A, 600 V, 3-pole molded case circuit breaker built to safeguard your panelboards and load centers. Designed for dependable branch circuit overcurrent and short-circuit protection, this unit delivers reliable performance when it matters most.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSpace-conscious design\u003c\/strong\u003e: The compact molded case profile maximizes panel space, making it easier to fit into tight electrical enclosures without compromising protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic protection\u003c\/strong\u003e: A thoughtfully engineered trip unit provides stable, repeatable protection performance across varying conditions, helping prevent nuisance trips while ensuring safety.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e: Specifically engineered to be compatible with matching OEM load centers and panelboards, simplifying installation and ensuring dependable operation within your existing system.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e: Suitable for residential, commercial, and light industrial environments where robust 3-pole protection at 600 V is required.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical specifications at a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Square D\u003c\/li\u003e \u003cli\u003ePart Number: LJL36400U31X\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 400 A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 600 V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 3\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical usage scenarios include upgrading panel protection for high-demand feeders, integrating into commercial electrical rooms where 3-pole coordination is essential, and enabling safer, more reliable three-phase distribution in light industrial settings. By pairing this breaker with compatible OEM panelboards, you gain a cohesive protection solution that reduces troubleshooting time and supports long-term electrical system reliability.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355326402722,"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_dc144571-1f73-4e48-b457-57c9fb6a12ab.png?v=1764691356","url":"https:\/\/www.ampstate.com\/products\/square-d-ljl36400u31x-400a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}