{"product_id":"square-d-la36400-400a-600v-3-pole-plug-in-circuit-breaker","title":"Square D LA36400 - 400 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D LA36400 is a robust 400A, 600V, 3-pole plug-in molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Its fast plug-in connection makes installation and field replacement quick and straightforward, reducing downtime during maintenance or upgrades.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFast plug-in connection\u003c\/strong\u003e enables rapid installation and easy replacements, minimizing panel downtime.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection across a wide range of load conditions, automatically responding to overloads and short circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design\u003c\/strong\u003e supports three-phase distribution, ideal for commercial and light industrial electrical systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600V electrical rating\u003c\/strong\u003e broadens compatibility with medium-voltage panel environments and higher-demand circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e400A continuous capacity\u003c\/strong\u003e suited for main feeders and large branch circuits within panelboards and load centers.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e specifically engineered to pair with matching Square D OEM load centers and panelboards for reliable fit and performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e suitable for residential, commercial, and light industrial environments where robust three-phase protection is required.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhat makes this breaker stand out is its combination of a plug-in form factor, a reliable thermal-magnetic trip mechanism, and deliberate compatibility with Square D panel ecosystems. This means faster upgrades, simpler maintenance, and consistent protection across your distribution system without sacrificing performance.\u003c\/p\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\u003cstrong manufacturer:\u003e Square D\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong part number:\u003e LA36400\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong type:\u003e Thermal-magnetic molded case circuit breaker\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong amperage rating:\u003e 400A\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong voltage rating:\u003e 600V\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong number of poles:\u003e 3\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong mounting style:\u003e Plug-in\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong application:\u003e Branch circuit overcurrent and short-circuit protection\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical tips for installation and use\u003c\/h3\u003e\n\u003cp\u003eEnsure full compatibility with your OEM load center or panelboard before installation. The LA36400 is designed for quick plug-in connection, so verify that your enclosure supports a 3-pole, 400A plug-in unit. In three-phase systems, this breaker helps protect main feeders and large circuits from overloads and short circuits, supporting safer operation in busy electrical rooms. For best results, schedule installation through a qualified electrician and follow all applicable electrical codes and safety guidelines.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355315490978,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-la36400-400-a-600-v-3-pole-plug-in-circuit-breaker-731.webp?v=1788749875","url":"https:\/\/www.ampstate.com\/products\/square-d-la36400-400a-600v-3-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}