{"product_id":"square-d-lla36400u44x-400a-3-pole-plug-in-circuit-breaker","title":"Square D LLA36400U44X - 400 A, 3-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Square D LLA36400U44X — a 400 A, 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 supports quick installation and easy replacements, keeping maintenance downtime to a minimum. The built-in thermal-magnetic trip unit ensures stable, repeatable protection across varying fault conditions, helping you avoid nuisance trips while maintaining safety and reliability.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFast plug-in connection\u003c\/strong\u003e for rapid installation and straightforward future swaps in compatible OEM panelboards.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers consistent protection performance, reacting appropriately to both short circuits and overloads.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e engineered to work with matching Square D load centers and panelboards for a proper fit and reliable operation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e suited for residential, commercial, and light industrial environments where a 400 A, 3-pole breaker is required.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e LLA36400U44X\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage Rating:\u003c\/strong\u003e 400 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting Style:\u003c\/strong\u003e Plug-in\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMain or feeder protection in large residential service panels and subpanels.\u003c\/li\u003e \u003cli\u003eCommercial load centers and light industrial panelboards requiring robust 400 A, 3-pole protection.\u003c\/li\u003e \u003cli\u003eUpgrading aging electrical distributions where fast, reliable plug-in replacements minimize downtime.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Square D LLA36400U44X, you get a purpose-built solution that balances installation efficiency with dependable protection. It’s crafted for installers and facility managers who value compatibility, performance, and peace of mind in high-demand electrical environments.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355327418530,"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-lla36400u44x-400-a-3-pole-plug-in-circuit-breaker-ampstate-695.webp?v=1788750826","url":"https:\/\/www.ampstate.com\/products\/square-d-lla36400u44x-400a-3-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}