{"product_id":"square-d-mef836lsig-circuit-breaker","title":"Square D | MEF836LSIG | Circuit Breaker | 800A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D MEF836LSIG Circuit Breaker is a purpose-built protective device engineered for demanding electrical installations. With an 800A rating, a 3-pole design, and a 600V operating capability, this breaker delivers reliable overcurrent protection for high-demand feeders and distribution panels in industrial environments.\u003c\/p\u003e \u003ch2\u003eOverview and core value\u003c\/h2\u003e\n\u003cp\u003eDesigned for maintenance, retrofit, and replacement projects where exact specifications matter, the MEF836LSIG provides OEM-grade protection that aligns with heavy-load systems. Its 3-pole configuration ensures coordinated protection across multiple phases, helping to safeguard wiring, conductors, and downstream equipment from overcurrent events.\u003c\/p\u003e \u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 800 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles\u003c\/strong\u003e: 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage\u003c\/strong\u003e: 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number\u003c\/strong\u003e: MEF836LSIG\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer\u003c\/strong\u003e: Square D\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy this model stands out\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eOptimized for high-current applications where dependable protection is non-negotiable.\u003c\/li\u003e \u003cli\u003eOEM-grade part designed to fit specific Square D panels and systems, reducing guesswork during retrofit or replacement.\u003c\/li\u003e \u003cli\u003eThe part number MEF836LSIG serves as the best reference for compatibility, helping you verify fit before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eUse cases and ideal applications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eMaintenance and retrofit projects in industrial facilities that require 800A protection across three phases.\u003c\/li\u003e \u003cli\u003eReplacement of aging or failed breakers in high-load power distribution schemes.\u003c\/li\u003e \u003cli\u003eUpgrading feeders in control rooms, manufacturing floors, and large equipment installations that demand robust 600V protection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eCompatibility and shopping guidance\u003c\/h2\u003e\n\u003cp\u003eNotes: Confirm fit and ratings before ordering. The part number MEF836LSIG is the best reference for compatibility with your Square D panel or distribution system. If you’re unsure about match, cross-check the panel labeling and service manual against the MEF836LSIG specifications to ensure seamless integration.\u003c\/p\u003e \u003ch2\u003ePractical tips for installation and use\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eVerify conductor sizes and torque specifications in the panel’s installation manual before wiring.\u003c\/li\u003e \u003cli\u003ePlan for load distribution that aligns with the 800A rating to prevent nuisance trips or unnecessary disconnection.\u003c\/li\u003e \u003cli\u003eStore and handle the breaker in a clean, dry environment to preserve performance and longevity.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the Square D MEF836LSIG for reliable, purpose-built protection that matches the demands of high-current, three-phase electrical systems. Its explicit specs and clear compatibility guidance help you make a confident, well-informed purchase for maintenance, retrofit, or replacement projects.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46426345111714,"sku":"MEF836LSIG","price":2010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/square-d-mef836lsig-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}