{"product_id":"square-d-lc36400-400a-600v-3-pole-plug-in-circuit-breaker","title":"Square D LC36400 - 400 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Square D LC36400 from AmpState — a robust 400 A, 600 V, 3-pole plug-in molded case circuit breaker designed to protect your most critical branch circuits. Built for dependable overcurrent and short-circuit protection in panelboards and load centers, this unit combines fast installation with precise, reliable tripping performance you can trust in daily operation.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFast plug-in connection\u003c\/strong\u003e Enables quick installation and easy replacement during maintenance or panel upgrades, minimizing downtime.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e Delivers stable, repeatable protection: the thermal element handles gradual overloads while the magnetic element provides an instantaneous response to hard short circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e Engineered to drop into matching Square D load centers and panelboards without adapters, ensuring a clean, code-compliant install.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole, 400 A, 600 V\u003c\/strong\u003e Ideal for three-phase distributions and higher-load circuits in commercial and light industrial applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePlug-in mounting\u003c\/strong\u003e Facilitates straightforward upgrades and servicing in field or facility environments, reducing installation complexity.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal for who and where this fits\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eElectricians and facilities teams working on residential, commercial, and light industrial panelboards seeking reliable protection with OEM compatibility.\u003c\/li\u003e \u003cli\u003eProjects involving panel refreshes, code-compliant retrofits, or capacity upgrades that require a heavy-duty, plug-in circuit breaker.\u003c\/li\u003e \u003cli\u003eSystems that demand quick replacement workflows to minimize downtime during maintenance or fault isolation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eUse cases and practical scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eNew installations: Install in three-phase panelboards where 400 A feeders demand robust branch-circuit protection at 600 V.\u003c\/li\u003e \u003cli\u003ePanelboard retrofits: Swap aging breakers with this OEM-matched unit to restore reliable trip performance without rewiring.\u003c\/li\u003e \u003cli\u003eService upgrades: Support increased load demands in light industrial environments while maintaining compliance with electrical codes.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Square D\u003c\/li\u003e \u003cli\u003ePart number: LC36400\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\u003eMounting style: Plug-in\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the Square D LC36400 from AmpState for a trusted, OEM-aligned solution that delivers precise protection, fast serviceability, and compatibility with your existing panel infrastructure. This is more than a breaker—it’s a reliable cornerstone for safe, continuous electrical operation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355316768930,"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-lc36400-400-a-600-v-3-pole-plug-in-circuit-breaker-595.webp?v=1788750022","url":"https:\/\/www.ampstate.com\/products\/square-d-lc36400-400a-600v-3-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}