{"product_id":"square-d-lld36400cu44x","title":"Square D LLD36400CU44X 400A 3-Pole 600 V Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eFor demanding three-phase power systems, the Square D LLD36400CU44X delivers dependable overcurrent protection at a robust 400 A. This 3-pole, 600 V circuit breaker is built to interrupt fault currents across all three phases, helping safeguard equipment and wiring in commercial and industrial electrical distributions.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number\u003c\/strong\u003e: LLD36400CU44X\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating\u003c\/strong\u003e: 400 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles\u003c\/strong\u003e: 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating\u003c\/strong\u003e: 600 V\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eKey advantages of this Square D breaker go beyond its impressive ratings. The 3-pole design provides synchronized protection across all phases in a three-phase system, which is essential for preventing imbalanced loads and protecting motors, drives, and feeders from harmful fault conditions. With a 400 A capacity, it handles high-current applications typical in mid-to-large commercial and light industrial environments, while remaining a compact, reliable solution for main feeders and distribution panels.\u003c\/p\u003e \u003ch3\u003eIdeal use scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eProtection of large three-phase feeders in commercial electrical rooms and light industrial installations.\u003c\/li\u003e \u003cli\u003eProtection for heavy-moload motors, HVAC equipment, compressors, and other high-current loads.\u003c\/li\u003e \u003cli\u003eServes as a main disconnect or primary protection device in distribution panels requiring a 400 A, 3-pole solution.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhat makes the LLD36400CU44X distinctive is its clear alignment with three-phase systems needing high-current interruption at up to 600 V. It’s a purpose-built choice when you require reliable, coordinated protection across all phases without compromising space or performance. By selecting this Square D model, you’re choosing a component designed to integrate into standard electrical distributions while delivering the protection your equipment demands.\u003c\/p\u003e \u003cp\u003eWhether you’re upgrading an existing panel, replacing a failed breaker, or designing a new distribution setup for a demanding load profile, the Square D LLD36400CU44X 400 A 3-Pole 600 V circuit breaker brings clarity of protection, straightforward applicability, and the assurance of a trusted brand in electrical safety.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46423540072610,"sku":"LLD36400CU44X","price":22382.0,"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-lld36400cu44x","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}