{"product_id":"square-d-qja221001-100a-2p-circuit-breaker","title":"Square D QJA221001 Circuit Breaker, 100A, 2-Pole","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSquare D QJA221001 Circuit Breaker, 100 A, 2-Pole\u003c\/strong\u003e is a rugged protection device engineered for demanding industrial electrical service, maintenance, and replacement projects. Use the part number to confirm compatibility for your application and keep critical systems protected with a reliable, fast-acting disconnect.\u003c\/p\u003e \u003ch2\u003eTrusted protection for industrial panels and distribution\u003c\/h2\u003e\n\u003cp\u003eDesigned as a two-pole breaker, the QJA221001 delivers coordinated interruption for both conductors, helping prevent phase imbalance and ensuring a clean, simultaneous trip when fault conditions arise. This makes it a practical choice for industrial environments where uptime and safety are paramount.\u003c\/p\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e QJA221001\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Circuit Breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 100 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 2\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIntended use:\u003c\/strong\u003e Industrial electrical service, maintenance, and replacement projects\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow to verify compatibility\u003c\/h3\u003e\n\u003col\u003e \u003cli\u003eMatch the part number \u003cstrong\u003eQJA221001\u003c\/strong\u003e to your panel or distribution equipment’s compatibility list.\u003c\/li\u003e \u003cli\u003eAssess whether your application requires a 2-pole, 100 A protection device and ensure it fits within the panel’s design and bus configuration.\u003c\/li\u003e \u003cli\u003eIf you’re unsure about fit or substitutions, message us and we’ll help confirm compatibility based on your specific application requirements.\u003c\/li\u003e\n\u003c\/ol\u003e \u003ch3\u003eUse cases and practical scenarios\u003c\/h3\u003e\n\u003cp\u003eIdeal for:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eNew industrial installations where reliable two-pole protection is essential for two energized conductors.\u003c\/li\u003e \u003cli\u003eMaintenance or retrofits on existing systems that require upgrading to a 100 A, two-pole solution with coordinated tripping.\u003c\/li\u003e \u003cli\u003eReplacement projects where QJA-series devices are specified to maintain system protection consistency and availability.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy choose this model over alternatives\u003c\/h3\u003e\n\u003cp\u003eThe QJA221001 pair with Square D’s proven design philosophy, delivering robust performance in demanding environments. By sticking to the exact part number, you ensure compatibility with your electrical architecture and preserve protective coordination across your protection scheme—reducing nuisance trips and simplifying future maintenance. This isn’t a generic component—it's a purpose-built solution for industrial service, maintenance, and replacement tasks where reliability matters most.\u003c\/p\u003e \u003ch3\u003eTips for installation and ongoing care\u003c\/h3\u003e\n\u003cp\u003eFor best results, ensure installation follows your local electrical codes and the panel manufacturer’s guidance. Verify that the breaker’s rating matches the circuit’s load demand and that conductors are properly terminated. Periodic inspection of connections and trip mechanisms helps maintain dependable performance over time. If you’re coordinating a replacement, keeping the same part number simplifies ordering and ensures consistent protection characteristics across your fleet of equipment.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46415729655970,"sku":"QJA221001","price":460.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_513d6710-3734-4b27-839d-f68e6f4b470a.png?v=1765492974","url":"https:\/\/www.ampstate.com\/products\/square-d-qja221001-100a-2p-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}