{"product_id":"square-d-mgl36300-circuit-breaker","title":"Square D | MGL36300 | Circuit Breaker | 300A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D MGL36300 Circuit Breaker—a rugged, industrial-grade solution engineered for reliable three‑phase protection in demanding 600V systems. With a 300A rating across 3 poles, this breaker is built to handle significant loads while delivering precise, dependable disconnects when faults occur. It’s the go-to choice for maintenance, retrofit, and replacement projects where exact specifications matter.\u003c\/p\u003e \u003cp\u003eKey details you can rely on:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 300 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles\u003c\/strong\u003e: 3-Pole (three-phase protection)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage\u003c\/strong\u003e: 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: MGL family\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart reference\u003c\/strong\u003e: MGL36300 — use this part number as the best compatibility reference; always confirm fit and ratings before ordering\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBest use cases\u003c\/strong\u003e: maintenance, retrofit, and replacement in existing Square D installations\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this matters:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eDirect compatibility with Square D panels and enclosures that specify the MGL36300 part number, ensuring a straightforward swap without extensive panel rework.\u003c\/li\u003e \u003cli\u003eThree-pole design provides balanced protection across all three phases, helping to prevent uneven load and potential faults in 3-phase systems.\u003c\/li\u003e \u003cli\u003eA durable, industrial-grade breaker designed to endure the rigors of commercial and light-industrial electrical rooms, minimizing downtime during replacements or upgrades.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical guidance for your project:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eBefore purchasing, double-check the panel catalog or service manual to confirm fit and ratings align with your equipment. The part number MGL36300 is the most reliable reference for compatibility.\u003c\/li\u003e \u003cli\u003ePlan for a clean, de-energized installation: lockout\/tagout, verify insulation, and follow all applicable electrical codes and safety practices.\u003c\/li\u003e \u003cli\u003eWhen ordering, consider stocking a spare unit for critical systems where downtime is costly, as substitutions can introduce delays if mismatches occur.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46424824971426,"sku":"MGL36300","price":11708.0,"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-mgl36300-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}