{"product_id":"square-d-lgp36400u31x-circuit-breaker","title":"Square D | LGP36400U31X | Circuit Breaker | 400A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D LGP36400U31X circuit breaker is your precise, dependable solution for maintenance, retrofit, and replacement projects where exact specification matching matters. Designed to integrate seamlessly into compatible Square D panels, this 400 A, 3-pole unit delivers reliable protection for three-phase electrical systems at up to 600 V.\u003c\/p\u003e \u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e LGP36400U31X\u003c\/li\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\u003eSeries:\u003c\/strong\u003e LGP\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Circuit Breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Maintenance, Retrofit, Replacement\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this LGP36400U31X stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eExact part-number alignment ensures compatibility with Square D panels and related accessories, reducing guesswork during replacements or upgrades.\u003c\/li\u003e \u003cli\u003eThree-pole design is ideal for three-phase electrical environments, providing appropriate protection for larger loads and equipment.\u003c\/li\u003e \u003cli\u003e600 V rating supports common industrial and commercial mains, enabling safe protection across a range of applications.\u003c\/li\u003e \u003cli\u003eBuilt for retrofit and replacement scenarios, helping you modernize or refresh existing electrical infrastructure without extensive panel modifications.\u003c\/li\u003e \u003cli\u003ePart of the Square D lineup, offering dependable performance and predictable interaction with other Square D components.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance cycles in facilities with older or aging panels that require a like-for-like replacement.\u003c\/li\u003e \u003cli\u003eRetrofits where system loads have increased and upgrading to a higher-current breaker is necessary, while staying within existing panel architecture.\u003c\/li\u003e \u003cli\u003eReplacement during panel refresh projects to maintain consistency with the original protection plan and wiring schemes.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eFit, verification, and installation tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eConfirm fit and ratings before ordering. The part number LGP36400U31X is the primary reference for compatibility.\u003c\/li\u003e \u003cli\u003eCheck that your panel accepts LGP-series breakers and that the surrounding bus and mounting hardware match the unit’s specifications.\u003c\/li\u003e \u003cli\u003eFollow standard electrical safety practices: disconnect power, use insulated tools, and consult your panel’s labeling for proper installation guidelines.\u003c\/li\u003e \u003cli\u003eAfter installation, verify proper alignment and secure mounting to ensure reliable operation under voltage and load conditions.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhen you need a precise, compatible 400 A, 3-pole, 600 V circuit breaker for maintenance, retrofit, or replacement, the Square D LGP36400U31X delivers the trusted performance you expect—paired with the confidence that comes from using the exact part reference for your system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46426775814306,"sku":"LGP36400U31X","price":15532.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-lgp36400u31x-circuit-breaker-400a-3-pole-600v-560.webp?v=1789619388","url":"https:\/\/www.ampstate.com\/products\/square-d-lgp36400u31x-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}