{"product_id":"square-d-hdl36100u43x-100a-3-pole-circuit-breaker","title":"Square D HDL36100U43X - 100 A, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D HDL36100U43X delivers reliable, space-efficient protection for your electrical panel with a clean, three-pole design tuned for 3-phase systems. At 100 A, this molded case circuit breaker provides disciplined branch circuit overcurrent and short-circuit protection in panelboards and load centers, helping you prevent damage and downtime in demanding environments.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded case design\u003c\/strong\u003e makes efficient use of panel space, so you can fit essential protection without crowding the enclosure.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection characteristics, responding predictably to both overloads and short circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole configuration\u003c\/strong\u003e designed for 3-phase circuits, ideal for commercial or light industrial applications as part of a balanced protection strategy.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e engineered to work with matching Square D load centers and panelboards, ensuring proper fit, alignment, and coordinated protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile for multiple applications\u003c\/strong\u003e suitable for residential, commercial, and light industrial electrical protection needs where dependable overcurrent protection is a must.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSmart protection for real-world needs\u003c\/h3\u003e\n\u003cp\u003eThis 100 A, 3-pole breakers cleanly isolate fault conditions, reducing the risk of wiring damage, equipment failure, and nuisance outages. By combining a compact form factor with a reliable thermal-magnetic trip mechanism, the HDL36100U43X helps you maintain service continuity for lights, motors, HVAC loads, and other critical circuits in panelboards and load centers.\u003c\/p\u003e \u003ch3\u003eUse cases and ideal applications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eNew installations that require a compact, three-pole protective device for 3-phase electrical systems\u003c\/li\u003e \u003cli\u003ePanelboard or load center upgrades where OEM compatibility matters for seamless operation\u003c\/li\u003e \u003cli\u003eResidential lighting and small commercial circuits that benefit from dependable branch-circuit protection\u003c\/li\u003e \u003cli\u003eLight industrial feeders that demand consistent trip performance under varying load conditions\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical specifications\u003c\/h3\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 HDL36100U43X\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 100 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of poles:\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 \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed to match OEM load centers and panelboards for coordinated protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether you’re building out a new panel installation or upgrading an aging setup, the HDL36100U43X offers precise protection, compact footprint, and OEM-aligned performance. Trust it to safeguard your circuitry with dependable, repeatable trip behavior, and keep your electrical system running smoothly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355264012450,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/schnieder_and_square_d_breaker_and_panel_74a8add1-fefa-4639-8aa0-a2b58b2acf55.png?v=1764690800","url":"https:\/\/www.ampstate.com\/products\/square-d-hdl36100u43x-100a-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}