{"product_id":"square-d-mhl36300-circuit-breaker","title":"Square D | MHL36300 | Circuit Breaker | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D MHL36300 3-Pole 600V circuit breaker is built for serious electrical protection in industrial and commercial panels. Designed for maintenance, retrofit, and replacement projects, this unit delivers reliable three-phase interruption when faults occur, helping protect motors, drives, and other critical loads without compromising system uptime.\u003c\/p\u003e \u003ch2\u003eWhy this Square D MHL36300 stands out\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExact compatibility guaranteed by part number\u003c\/strong\u003e: The MHL36300 designation is your best reference for cross‑checking fit and ratings, minimizing guesswork during replacements or upgrades.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole protection for balanced three-phase systems\u003c\/strong\u003e: Provides synchronized interruption across all three lines, reducing the risk of phase imbalances and equipment damage.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600V rating tailored to industrial environments\u003c\/strong\u003e: Suitable for high‑voltage, three‑phase distribution and motor circuits common in manufacturing, processing, and heavy machinery.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDesigned for retrofit and maintenance\u003c\/strong\u003e: A practical choice when upgrading legacy panels or refreshing aging protection devices without a full panel overhaul.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDurable, field‑reliable performance\u003c\/strong\u003e: Built to withstand demanding environments while delivering consistent tripping characteristics when protection is needed.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eSpecifications at a glance\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePoles\u003c\/strong\u003e: 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating\u003c\/strong\u003e: 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart reference\u003c\/strong\u003e: MHL36300\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eUpgrading or replacing protection in industrial control panels that serve 3‑phase motors and drives\u003c\/li\u003e \u003cli\u003eMaintenance upgrades in manufacturing lines where reliable, synchronized trip across all phases is essential\u003c\/li\u003e \u003cli\u003eRetrofits to bring older electrical infrastructure up to current protection standards while preserving panel architecture\u003c\/li\u003e \u003cli\u003eNew installations in panels designed to accept 3‑pole, 600V breakers for robust phase protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eHow to ensure compatibility and proper installation\u003c\/h2\u003e\n\u003col\u003e \u003cli\u003eMatch the exact part number: confirm that your panel or enclosure accepts MHL36300 and is rated for 600V three‑phase service.\u003c\/li\u003e \u003cli\u003eCompare mounting and terminal layout to your existing unit to avoid fit issues during replacement.\u003c\/li\u003e \u003cli\u003eEngage a qualified electrician to verify electrical ratings, wiring configurations, and safe interlocks before installation.\u003c\/li\u003e \u003cli\u003eVerify the panel labeling and service conditions after installation to ensure proper protection settings and avoid nuisance trips.\u003c\/li\u003e\n\u003c\/ol\u003e \u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Confirm fit and ratings before ordering. The part number is the best reference for compatibility, helping you avoid mismatches that can disrupt protection and uptime.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46424363204770,"sku":"MHL36300","price":310.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-mhl36300-circuit-breaker-3-pole-600v-299.webp?v=1789344340","url":"https:\/\/www.ampstate.com\/products\/square-d-mhl36300-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}