{"product_id":"square-d-lla36400u53x","title":"Square D LLA36400U53X 400A 3-Pole 600 V Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the \u003cstrong\u003eSquare D LLA36400U53X\u003c\/strong\u003e 400A 3-Pole 600 V Circuit Breaker — a robust overcurrent protector designed for demanding three-phase power systems. Built to guard feeders and critical loads, this device helps keep equipment safe and your operations running smoothly in commercial and industrial environments.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eKey spec snapshot:\u003c\/strong\u003e Part number LLA36400U53X; current rating 400 A; 3-pole configuration; voltage rating 600 V.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole protection for balanced power\u003c\/strong\u003e ensures all three phases are monitored and interrupted together, reducing phase imbalances and safeguarding motors, transformers, and other heavy-duty equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDesigned for high-demand feeders\u003c\/strong\u003e— ideal for distribution panels, large HVAC systems, industrial machinery, and other setups that require reliable protection at 600 V.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSquare D compatibility\u003c\/strong\u003e— built to integrate with Square D enclosures and distribution infrastructure, making replacement and maintenance straightforward for established panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eInstallation and safety considerations\u003c\/strong\u003e— verify conductor sizing aligns with the 400 A rating, follow torque specifications for secure terminations, and confirm the system voltage does not exceed 600 V. Regular inspection and timely replacement are key to sustained protection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis device is particularly well-suited for facilities managers, electrical contractors, and panel builders overseeing data centers, manufacturing floors, warehouses, and large office complexes with three-phase power. When you need reliable protection against overloads and short circuits in a 600 V three-phase network, the LLA36400U53X delivers precise, durable performance without complicating maintenance.\u003c\/p\u003e \u003cp\u003eChoose this circuit breaker to simplify spares management in existing Square D systems, ensure consistent trip performance across all phases, and maintain peace of mind for the safety and continuity of your power distribution. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46423540105378,"sku":"LLA36400U53X","price":43877.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_229276d9-908d-46df-93e5-6fe31866e0ff.png?v=1765492975","url":"https:\/\/www.ampstate.com\/products\/square-d-lla36400u53x","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}