{"product_id":"square-d-mhl3612001287-circuit-breaker","title":"Square D | MHL3612001287 | Circuit Breaker | 1200A | 3-Pole | 600V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D MHL3612001287 Circuit Breaker—engineered for demanding industrial panels where high current protection and precise compatibility matter. This 1200A, 3-pole unit is designed for 600V systems and uses a bolt-on mounting for a secure, vibration-resistant fit in retrofit, maintenance, and replacement projects.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAmperage: 1200A\u003c\/li\u003e \u003cli\u003ePoles: 3-Pole\u003c\/li\u003e \u003cli\u003eVoltage rating: 600V\u003c\/li\u003e \u003cli\u003eMounting style: Bolt-On\u003c\/li\u003e \u003cli\u003ePart number reference: MHL3612001287\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this model stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eExact spec alignment for reliable protection: When upgrading or swapping, match the amperage, poles, voltage, and mounting style to avoid panel rework.\u003c\/li\u003e \u003cli\u003eSecure, bolt-on installation: The bolt-on design is built for solid mechanical connection in crowded or high-vibration panels, reducing the risk of loose connections over time.\u003c\/li\u003e \u003cli\u003eBest reference for compatibility: The MHL3612001287 part number is the most reliable identifier to confirm fit with your Square D or compatible panels. Always verify fit and ratings before ordering.\u003c\/li\u003e \u003cli\u003ePractical retrofit and replacement solution: Ideal for maintaining service continuity in critical environments like manufacturing lines, HVAC systems, or data-center power distribution where downtime matters.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal applications\u003c\/h3\u003e\n\u003cp\u003eUse this 3-pole, 1200A breaker in main distribution panels, feeder circuits, or motor control centers where a 600V rating is required and large load protection is essential. Its robust construction suits industrial environments that demand dependable performance under frequent switching and fault conditions.\u003c\/p\u003e \u003ch3\u003eInstallation and safety tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAlways power down equipment and follow your site’s lockout\/tagout procedures before installation or replacement.\u003c\/li\u003e \u003cli\u003eCross-check the panel’s rating and the breaker’s bolt pattern to ensure a proper fit.\u003c\/li\u003e \u003cli\u003eUse the part number MHL3612001287 as the primary reference when confirming compatibility with your enclosure or bus-bar arrangement.\u003c\/li\u003e \u003cli\u003eConsult your electrical engineer or qualified technician if you are unsure about discriminator, trip curve, or panel interlock requirements.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eMaintenance and longevity considerations\u003c\/h3\u003e\n\u003cp\u003eRegular inspection of connections and consistent torque on mounting hardware (per panel guidelines) help preserve the integrity of a bolt-on circuit breaker installation. Keep a spare MHL3612001287 on hand for timely replacements and to minimize downtime during maintenance windows.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46426774044834,"sku":"MHL3612001287","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_16d3a2fb-5d93-424c-9206-5031ec4b178f.png?v=1765492977","url":"https:\/\/www.ampstate.com\/products\/square-d-mhl3612001287-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}