{"product_id":"square-d-hja36100u43x-100a-3-pole-plug-in-circuit-breaker","title":"Square D HJA36100U43X - 100 A, 3-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Square D HJA36100U43X, a 100 A, 3-pole plug-in molded-case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for fast, reliable integration, this device is a smart upgrade for Square D systems that demand robust protection with quick serviceability.\u003c\/p\u003e \u003ch3\u003eKey advantages\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFast plug-in connection\u003c\/strong\u003e enables quick installation and effortless replacement in compatible panelboards and load centers, minimizing downtime during upgrades or servicing.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by promptly addressing short circuits while smoothly handling overloads for consistent performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design\u003c\/strong\u003e provides balanced protection for 3-phase systems, making it ideal for commercial and light industrial panelboards and motor circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e100 A rating\u003c\/strong\u003e supports feeders and branch circuits up to 100 amps, delivering reliable protection for mid-size electrical distributions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e engineered to fit matching Square D OEM load centers and panelboards for a seamless, reliable install.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile across settings\u003c\/strong\u003e suitable for residential, commercial, and light industrial environments, enabling flexible use in new builds or replacements.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eUse cases and suitability\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplacing aging or faulty breakers in Square D panelboards to restore proper protection and trip performance.\u003c\/li\u003e \u003cli\u003eMotor and equipment circuits in commercial and light industrial spaces that require 3-phase protection up to 100 A.\u003c\/li\u003e \u003cli\u003eNew installations in small-to-mid size commercial facilities where fast plug-in deployment simplifies panel assembly and maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\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 HJA36100U43X\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded-case circuit breaker (MCCB)\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 \u003cp\u003eDesigned for reliability in continuous operation, the Square D HJA36100U43X brings proven protection to your electrical distribution. Whether you’re upgrading a panel, replacing a worn breaker, or stocking essential spares for service fleets, this 3-pole plug-in breaker delivers the performance and compatibility you need. Add to cart now to secure quick, dependable protection for your Square D panel system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355290521762,"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_883f45f3-1d81-4ddf-b693-861dd05a42c3.png?v=1764690980","url":"https:\/\/www.ampstate.com\/products\/square-d-hja36100u43x-100a-3-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}