{"product_id":"square-d-hja36100u44x-100a-3-pole-plug-in-circuit-breaker","title":"Square D HJA36100U44X - 100 A, 3-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cspan\u003eSquare D HJA36100U44X delivers dependable, plug-in overcurrent protection for modern electrical panels. This 100 A, 3-pole molded case circuit breaker is engineered for fast, secure installation and reliable performance in panelboards and loadcenters across residential, commercial, and light industrial settings.\u003c\/span\u003e \u003ch2\u003eWhy this 100A, 3-Pole plug-in breaker stands out\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFast plug-in connection\u003c\/strong\u003e: Designed for quick installation and simple replacement, reducing downtime during upgrades or maintenance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e: Combines overload protection with magnetic short-circuit protection for stable, repeatable response under a broad range of loads and fault conditions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e: Specifically shaped to fit and function with matching Square D OEM load centers and panelboards, ensuring reliable coordination with existing protection schemes.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole configuration\u003c\/strong\u003e: Ideal for 3-phase circuits and panelboard setups that require balanced protection across all phases.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliable for diverse environments\u003c\/strong\u003e: Proven performance in residential, commercial spaces and light industrial applications, from motors and HVAC to lighting and receptacle circuits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical snapshot\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 HJA36100U44X\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\u003eMounting Style:\u003c\/strong\u003e Plug-in\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\u003eIdeal use cases and practical applications\u003c\/h2\u003e\n\u003cp\u003eUse this 3-pole plug-in breaker to protect branch circuits in panelboards and loadcenters that require solid 3-phase protection up to 100 A. It’s well-suited for:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eCommercial lighting and receptacle circuits in small to mid-size facilities\u003c\/li\u003e \u003cli\u003eMotor loads and HVAC equipment where reliable short-circuit protection is critical\u003c\/li\u003e \u003cli\u003eUpgrading legacy panelboards to ensure coordinated protection with existing Square D devices\u003c\/li\u003e \u003cli\u003eResidential—where a 3-pole arrangement is needed for certain 3-phase or multi-pole configurations in newer installations\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eInstallation realities and smart maintenance tips\u003c\/h2\u003e\n\u003cp\u003eChoose this plug-in breaker when you want minimal service interruption and straightforward swaps. To maximize longevity and protection integrity:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eConfirm panelboard compatibility with the HJA36100U44X to ensure proper trip characteristics and labeling alignment.\u003c\/li\u003e \u003cli\u003eHandle with the panel power off; verify zero-energy conditions before installation or replacement.\u003c\/li\u003e \u003cli\u003eRecord the amperage rating and trip-type in your panel’s documentation to support future maintenance and safety audits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhen you need a trusted, industry-standard solution for 100 A, 3-pole protection, the Square D HJA36100U44X combines rapid plug-in installation with precise thermal-magnetic protection. It’s a practical, durable choice for keeping circuits guarded in a wide range of panelboard environments.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355290554530,"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_37be4f22-18fe-429a-b13b-d28bd6e3e16a.png?v=1764690981","url":"https:\/\/www.ampstate.com\/products\/square-d-hja36100u44x-100a-3-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}