{"product_id":"square-d-lja36600u44x-600a-600v-3-pole-plug-in-circuit-breaker","title":"Square D LJA36600U44X 600A 600V 3-Pole Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D LJA36600U44X—a robust 600 A, 600 V, 3-pole plug-in molded case circuit breaker engineered for dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Designed for fast, hassle-free installation and straightforward replacement, it keeps critical electrical systems protected with confidence.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy this breaker stands out\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSpeedy plug-in connection\u003c\/strong\u003e — minimize downtime during installation or service calls with a quick-connect design that seats securely into compatible panelboards.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic protection\u003c\/strong\u003e — a thermal element provides stable overload protection, while the magnetic trip rapidly interrupts severe short-circuit events, helping safeguard circuits and connected equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-ready compatibility\u003c\/strong\u003e — engineered to pair with matching Square D OEM load centers and panelboards, ensuring proper fit, electrical performance, and reliable coordination within the panel.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeavy-duty, three-phase readiness\u003c\/strong\u003e — 3-pole construction accommodates 3-phase systems where required, making it suitable for a range of applications from light commercial to industrial environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-capacity ratings\u003c\/strong\u003e — with a 600 A amperage rating and 600 V maximum voltage, this breaker handles demanding branch circuits and higher-energy loads with confidence.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical snapshot\u003c\/h2\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 LJA36600U44X\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 600 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 V\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 \u003ch2\u003eIdeal use cases\u003c\/h2\u003e\n\u003cp\u003eWhether provisioning a new install or upgrading an existing panel, this breaker is well-suited for:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eResidential, commercial, and light industrial panelboards and load centers that require robust branch protection\u003c\/li\u003e \u003cli\u003eReplace-and-upgrade projects where a reliable, OEM-compatible plug-in solution is preferred\u003c\/li\u003e \u003cli\u003eSystems with higher current demands that benefit from a 600 A protective device while maintaining safe voltage operation up to 600 V\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003ePractical considerations\u003c\/h2\u003e\n\u003cp\u003eFor best results, verify panel compatibility with the LJA36600U44X before installation, confirm the target circuit’s current and voltage requirements align with the 600 A \/ 600 V ratings, and follow standard electrical safety practices during replacement or mounting. This plug-in breaker is designed to integrate seamlessly into compatible Square D panelboards, delivering consistent protection and straightforward servicing when needed.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355326173346,"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-lja36600u44x-600-a-v-3-pole-plug-in-circuit-breaker-384.webp?v=1788750707","url":"https:\/\/www.ampstate.com\/products\/square-d-lja36600u44x-600a-600v-3-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}