{"product_id":"square-d-hdl36150u43x-150a-3-pole-circuit-breaker","title":"Square D HDL36150U43X - 150 A, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D HDL36150U43X—a 150 A, 3-pole molded case circuit breaker engineered for dependable branch-circuit overcurrent and short-circuit protection in panelboards and load centers.\u003c\/p\u003e \u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe HDL36150U43X combines a compact molded-case design with a thermal-magnetic trip unit, delivering stable, repeatable protection across real-world load conditions. Built to fit neatly into compatible Square D panelboards and load centers, it helps maximize usable space without sacrificing safety or performance.\u003c\/p\u003e \u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e150 A, 3-pole configuration\u003c\/strong\u003e provides robust protection for demanding branch circuits and multi-wire applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded-case design\u003c\/strong\u003e optimizes panel space, making it ideal for crowded panels in residential, commercial, and light industrial settings.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by responding to both overloads and short circuits, reducing nuisance trips while maintaining quick fault interruption.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e designed for seamless integration with matching Square D load centers and panelboards, ensuring proper fit and coordinated protection characteristics.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal Applications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eResidential panels where a reliable 150 A protection point is needed for feeder or sub-feed circuits.\u003c\/li\u003e \u003cli\u003eCommercial distribution boards and light industrial panels where space efficiency and dependable protection matter most.\u003c\/li\u003e \u003cli\u003eRetrofits and upgrades within Square D systems, delivering consistent trip curves and panel compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical Details\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e HDL36150U43X\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage Rating:\u003c\/strong\u003e 150 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eCompatibility \u0026amp; Installation Guidance\u003c\/h2\u003e\n\u003cp\u003eDesigned for straightforward integration into matching OEM Square D panelboards and load centers. When replacing an older breaker or expanding a system, the HDL36150U43X preserves trip characteristics and coordination within the protection scheme, helping maintain safety margins and reliability across the panel.\u003c\/p\u003e \u003ch2\u003ePractical Tips\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eVerify that your panel is compatible with HDL36150U43X and that the bus arrangement matches the 3-pole configuration.\u003c\/li\u003e \u003cli\u003eFollow the panel manufacturer's torque and wiring recommendations to ensure secure terminations.\u003c\/li\u003e \u003cli\u003eKeep a small inventory of compatible breakers for future expansions or replacements, especially in commercial or light industrial installations.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the HDL36150U43X for dependable 150 A protection that fits cleanly into Square D systems, delivering reliable performance where it matters most.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355264372898,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-hdl36150u43x-150-a-3-pole-circuit-breaker-ampstate-breakers-488.webp?v=1788746139","url":"https:\/\/www.ampstate.com\/products\/square-d-hdl36150u43x-150a-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}