{"product_id":"square-d-lhl36000m1287-circuit-breaker","title":"Square D | LHL36000M1287 | Circuit Breaker | 400A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D LHL36000M1287 circuit breaker is a purpose-built protection device for demanding electrical panels. With a 400A rating, 3 poles, and a 600V operating capability, this unit is designed to reliably interrupt fault currents in three-phase distribution networks while fitting neatly into standard Square D enclosures.\u003c\/p\u003e \u003cp\u003eIdeal for maintenance, retrofit, and replacement projects where exact specifications matter, this breaker preserves system safety without requiring a full panel upgrade. The LHL36000M1287 part number is the best reference for compatibility, making it easier to source the right device the first time.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e LHL36000M1287\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat makes it stand out\u003c\/h3\u003e\n\u003cp\u003eQuality protection from Square D means consistent performance, long service life, and predictable trips when you need them. This circuit breaker is engineered to stay reliable under routine cycling and fault conditions, helping minimize downtime and protect valuable equipment in commercial and industrial environments.\u003c\/p\u003e \u003ch3\u003eUse cases and ideal applications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplacement for aging 3-pole, 600V breakers in existing Square D panels\u003c\/li\u003e \u003cli\u003eRetrofit projects where matching the exact amperage, pole count, and voltage is critical\u003c\/li\u003e \u003cli\u003eMaintenance scenarios that demand a drop-in device with proven compatibility\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and compatibility tips\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, \u003cstrong\u003econfirm fit and ratings\u003c\/strong\u003e—the part number LHL36000M1287 is the most reliable reference for compatibility with your panel. If you’re upgrading or replacing, ensure the panel labeling supports a 400A, 3-Pole, 600V device and that mounting and terminal configurations align with the unit you select.\u003c\/p\u003e \u003cp\u003eWith the Square D LHL36000M1287, you’re choosing a trusted component that supports reliable protection and smooth maintenance workflows, keeping critical loads protected while minimizing replacement headaches.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46427246657698,"sku":"LHL36000M1287","price":3468.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_ad06fdd7-931c-4a09-bfbe-d05329579cd6.png?v=1765492978","url":"https:\/\/www.ampstate.com\/products\/square-d-lhl36000m1287-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}