{"product_id":"square-d-mx36400g-circuit-breaker","title":"Square D | MX36400G | Circuit Breaker | 400A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D MX36400G circuit breaker delivers industrial-grade protection for 600-volt electrical systems with a clear focus on reliability, retrofit simplicity, and long-term performance. Engineered as a 400 A, 3-pole device, it’s built to handle demanding load conditions while fitting neatly into compatible Square D panel configurations.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400 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 reference:\u003c\/strong\u003e MX36400G\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIntended use:\u003c\/strong\u003e maintenance, retrofit, and replacement in compatible panels\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhat makes it stand out\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eDirect compatibility with Square D panels that accept MX36400G, simplifying replacements and minimizing installation adjustments.\u003c\/li\u003e \u003cli\u003eRobust protection for high-demand 600V feeders, helping prevent overloads and short circuits in critical electrical infrastructure.\u003c\/li\u003e \u003cli\u003eCompact design that fits dense panel layouts without compromising interrupting capabilities for 400 A circuits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy you should consider this model\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhether you’re upgrading existing equipment, performing routine maintenance, or replacing end-of-life breakers, choosing the exact part MX36400G ensures proper coordination with your panel and system. The product notes emphasize confirming fit and ratings before ordering, a crucial step to avoid downtime and ensure safe operation.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eUse cases and practical guidance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eIdeal for service entrances and distribution panels in facilities operating 600V electrical distributions.\u003c\/li\u003e \u003cli\u003eExcellent for retrofit projects where a like-for-like replacement preserves panel characteristics and protective coordination.\u003c\/li\u003e \u003cli\u003eSuitable for environments that require dependable, predictable performance under heavy load conditions.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eNotes: Confirm fit and ratings before ordering. The MX36400G part number is the best reference for compatibility, ensuring your protection device aligns with your panel and meets your electrical system’s safety standards.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46427242365090,"sku":"MX36400G","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-mx36400g-circuit-breaker-400a-3-pole-600v-795.webp?v=1789692067","url":"https:\/\/www.ampstate.com\/products\/square-d-mx36400g-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}