{"product_id":"square-d-q2l3125h-circuit-breaker","title":"Square D | Q2L3125H | Circuit Breaker | 125A | 3-Pole | 240V | 22kA","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSquare D Q2L3125H\u003c\/strong\u003e Circuit Breaker — a rugged 125A, 3-pole protection device designed for 240V three-phase systems. Built for maintenance, retrofit, and replacement projects, this breaker delivers dependable fault protection with a robust \u003cstrong\u003e22 kA\u003c\/strong\u003e interrupting capacity, helping safeguard your electrical system against high-energy faults.\u003c\/p\u003e \u003cp\u003eWhy this matters: the combination of 125A rating and 22kA capacity provides a balanced solution for mid-sized industrial panels and equipment feeders, ensuring quick fault clearance while keeping normal operation uninterrupted.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 125 A\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\u003eInterrupting capacity:\u003c\/strong\u003e 22 kA\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eCompatibility and fit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePart reference:\u003c\/strong\u003e Q2L3125H is the best reference for compatibility. Confirm fit and ratings before ordering to avoid mismatches.\u003c\/li\u003e \u003cli\u003eThis unit is aligned with Square D Q2L-series panels and accessories, making it a natural choice for retrofit or replacement in systems built around these breakers.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eRetrofitting existing 3-phase panels that require reliable 125A protection with a 22kA interrupting capacity.\u003c\/li\u003e \u003cli\u003eMaintenance and component upgrades in manufacturing lines, commercial facilities, and data-center infrastructure that operate on 240V three-phase power.\u003c\/li\u003e \u003cli\u003eNew or rebuilt panel installations where precise protection and quick fault clearance are crucial for uptime and safety.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical tips for installation and selection\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAlways verify the panel’s rating and mounting compatibility with the Q2L3125H before purchase. The part number serves as the best reference for compatibility.\u003c\/li\u003e \u003cli\u003eConsider the electrical load profile and fault current levels in your facility to ensure 22kA interrupting capacity is suitable for your service entrance or feeder protection needs.\u003c\/li\u003e \u003cli\u003eKeep a reference copy of the panel schedule and guide when performing retrofits to ensure a seamless exchange with existing breakers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46424363335842,"sku":"Q2L3125H","price":310.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-q2l3125h-circuit-breaker-125a-3-pole-240v-22ka-409.webp?v=1789344383","url":"https:\/\/www.ampstate.com\/products\/square-d-q2l3125h-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}