{"product_id":"square-d-lga36400u43x","title":"Square D LGA36400U43X 400A 3-Pole 600 V Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eIf you’re safeguarding a 3‑phase 600 V distribution system, the Square D LGA36400U43X delivers dependable 400 A circuit protection in a compact, 3‑pole design. This high‑capacity breaker is built to fit seamlessly into compatible Square D panels, helping you maintain safe, reliable power delivery across demanding industrial and commercial applications.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 400 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3 (three‑phase configuration)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e LGA36400U43X\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBrand lineage:\u003c\/strong\u003e Square D—trusted in industrial electrical systems\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this matters for your operation\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cstrong reliable protection for three circuits:\u003e With a 400 A capacity, this breaker shields feeders and equipment in commercial or industrial panels from overloads and short circuits that could disrupt production or cause damage.\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePurpose‑built for 600 V systems:\u003c\/strong\u003e Designed to operate within higher‑voltage distribution networks, making it a practical choice for facilities with demanding power needs.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEasy replacement in compatible Square D panels:\u003c\/strong\u003e The LGA36400U43X is intended to slot into existing layouts, helping you minimize downtime during service or upgrades.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIdeal for modernizing or repairing panel boards:\u003c\/strong\u003e Use it to upgrade aging protection, streamline inventory with a precise part number, and ensure consistent performance across your electrical infrastructure.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical use cases\u003c\/p\u003e \u003cul\u003e \u003cli\u003eProtect large motors, conveyors, or multi‑zone feeders in manufacturing environments where 3‑phase power is standard.\u003c\/li\u003e \u003cli\u003eUpgrade or replace an aging panel segment to restore robust protection for critical loads in commercial facilities.\u003c\/li\u003e \u003cli\u003eIntegrate into new installations that require a high‑amperage, three‑pole 600 V circuit breaker from a proven Square D lineage.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhat you gain by choosing this specific part\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eClear, specific compatibility:\u003c\/strong\u003e Precisely matches Square D systems with the LGA36400U43X designation, reducing guesswork during procurement.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFocused performance attributes:\u003c\/strong\u003e The combination of 400 A current rating, 3 poles, and 600 V rating addresses common industrial protection needs without over‑specifying beyond what’s required.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOperational confidence:\u003c\/strong\u003e By selecting a manufacturer‑backed, panel‑ready component, you support safer shutdowns and consistent electrical protection in daily operations.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eInstallation and maintenance tips (practical, non‑vendor guidance)\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVerify that the panel and bus configuration are compatible with the LGA family and three‑pole 600 V ratings before replacement.\u003c\/li\u003e \u003cli\u003eCoordinate with your electrical team to ensure the 400 A rating aligns with the load served by the circuit to prevent nuisance trips during peak demand.\u003c\/li\u003e \u003cli\u003eKeep a labeled inventory of replacement parts by part number LGA36400U43X to simplify future maintenance and reduce downtime.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46423052189858,"sku":"LGA36400U43X","price":20850.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-lga36400u43x-400a-3-pole-600-v-circuit-breaker-940.webp?v=1789264816","url":"https:\/\/www.ampstate.com\/products\/square-d-lga36400u43x","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}