{"product_id":"square-d-hjl36100u44x-circuit-breaker","title":"Square D | HJL36100U44X | Circuit Breaker | 100A | 3-Pole | 600V | Feed-Through","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Square D HJL36100U44X Circuit Breaker — a purpose-built 100A, 3-pole, 600V feed-through unit designed for maintenance, retrofit, and replacement projects where exact specifications matter. Built to integrate seamlessly with Square D panels, this breaker delivers reliable performance when you need a precise match to your existing system.\u003c\/p\u003e \u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 100A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole for three-phase applications\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Feed-Through design to support downstream feeders\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e HJL36100U44X\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy choose the Square D HJL36100U44X feed-through circuit breaker\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\u003cstrong precise compatibility:\u003e The part number HJL36100U44X is the clearest reference for ensuring your replacement fits exactly where your current breaker resides. This isn’t a generic substitute — it’s a direct match for Square D installations that require a 100A, 3-pole, 600V feed-through unit.\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong reliable performance in demanding environments:\u003e Designed for industrial and commercial panels, this 600V-rated breaker handles essential power distribution while offering dependable protection for connected equipment and circuits.\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong streamlined retrofit and maintenance:\u003e The feed-through configuration simplifies upgrading or refurbishing panels by allowing continued feeders, reducing the need for additional components or adapters.\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong clear documentation and compatibility guidance:\u003e By relying on the exact part number, you minimize the guesswork often associated with replacements, ensuring you stay within original specifications and protective characteristics.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eMaintenance or replacement in existing Square D panels that require a 100A, 3-pole, 600V feed-through breaker.\u003c\/li\u003e \u003cli\u003eRetrofits where downstream feeders must be continued through the breaker assembly without introducing separate distribution devices.\u003c\/li\u003e \u003cli\u003eUpgrades in commercial or light industrial settings where precise compatibility reduces downtime and confirms protection alignment with the panel’s design.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eHow this model compares and practical tips\u003c\/h2\u003e\n\u003cp\u003eCompared to generic breakers, the Square D HJL36100U44X is purpose-built for Square D panels, offering a straightforward path to compatibility through the established part number. This reduces trial-and-error sourcing and helps ensure the protective trip characteristics and electrical fit match your system’s requirements.\u003c\/p\u003e \u003ch3\u003ePractical tips for selecting and ordering\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAlways verify fit and ratings before ordering. The notes for this model emphasize confirming compatibility with your panel’s specifications.\u003c\/li\u003e \u003cli\u003eUse the part number HJL36100U44X as the primary reference when coordinating with suppliers or catalog search tools.\u003c\/li\u003e \u003cli\u003ePlan for downstream feeder needs; the feed-through design supports clean, continued distribution within the same enclosure.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Square D HJL36100U44X Circuit Breaker, you gain a dependable, specification-aligned solution for maintenance, retrofit, and replacement projects. It’s engineered to meet the demands of modern electrical systems while providing a clear, exact-fit reference that simplifies procurement and installation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46424498700450,"sku":"HJL36100U44X","price":9658.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/square-d-hjl36100u44x-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}