{"product_id":"square-d-qja321006-circuit-breaker","title":"Square D | QJA321006 | Circuit Breaker | 100A | 3-Pole | 240V | Plug-In","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D QJA321006 circuit breaker — a reliable, plug-in solution designed for 3-pole, 240V systems. With a 100A rating, this unit provides solid protection for three-phase circuits in compatible Square D panels. Built for maintenance, retrofit, and replacement projects, it delivers a straightforward, efficient path to keeping critical equipment energized and safeguarded. When you need a matching specification fast, the part number QJA321006 is the best reference for compatibility.\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\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Plug-In\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e QJA321006\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy this plug-in breaker is the right choice\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePlug-in convenience:\u003c\/strong\u003e Quick installation in compatible panels minimizes downtime and reduces field labor compared to more invasive mounting methods.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePrecise compatibility:\u003c\/strong\u003e Designed to match Square D’s QJA-series specifications. Always verify fit and ratings before ordering — the part number is the most reliable reference for compatibility.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRobust 100A protection:\u003c\/strong\u003e Suitable for safeguarding 3-phase loads and feeder circuits, helping to prevent overloads in commercial and industrial applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile use cases:\u003c\/strong\u003e Ideal for maintenance substitutions, panel retrofits, or replacing a failed breaker in existing Square D installations that require a 3-pole, 240V unit.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eUse cases and practical scenarios\u003c\/h2\u003e\n\u003cp\u003eEngineered for real-world electrical setups, this breaker is a practical choice when you’re updating or repairing a panel that requires a 3-pole, 240V plug-in unit. It’s well-suited for protecting three-phase equipment in commercial spaces, light industrial environments, and service panels where quick, reliable replacement is critical. Use it to restore protection for motors, transformers, or other 3-phase loads that demand solid, dependable circuit protection at 100A.\u003c\/p\u003e \u003ch2\u003eInstallation and compatibility tips\u003c\/h2\u003e\n\u003cp\u003eBefore you order, confirm that your panel accepts plug-in QJA-series breakers and cross-check the ratings against your system requirements. The QJA321006 part number is your best reference for compatibility, ensuring you get a precise fit and correct electrical characteristics for your setup.\u003c\/p\u003e \u003cp\u003eWhen you’re ready to secure dependable protection for 3-pole, 240V circuits, the Square D QJA321006 plug-in circuit breaker delivers straightforward installation, clear identification, and solid performance for maintenance, retrofit, and replacement projects.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46427410825378,"sku":"QJA321006","price":2637.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_ad06fdd7-931c-4a09-bfbe-d05329579cd6.png?v=1765492978","url":"https:\/\/www.ampstate.com\/products\/square-d-qja321006-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}