{"product_id":"square-d-qda221251-circuit-breaker","title":"Square D | QDA221251 | Circuit Breaker | 125A | 2-Pole | 240V","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D QDA221251 circuit breaker is a precise, direct-fit solution for protecting 125-amp, 240-volt circuits in commercial and industrial panels. Built for maintenance, retrofit, and replacement projects, this 2-pole device keeps critical electrical systems safeguarded with a reliable, zone-ready design that aligns with your existing Square D infrastructure.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAmperage: 125 A\u003c\/li\u003e \u003cli\u003ePoles: 2-Pole\u003c\/li\u003e \u003cli\u003eVoltage: 240 V\u003c\/li\u003e \u003cli\u003eCompatibility note: best reference for compatibility is the part number QDA221251\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this matters\u003c\/h3\u003e\n\u003cp\u003eChoosing the exact part number QDA221251 minimizes troubleshooting time and eliminates guesswork when sourcing replacement breakers. The 2-pole, 240-volt configuration is ideal for protecting larger branch circuits or multi-wire branch circuits, ensuring both safety and continuity in operation. This breaker is purpose-built to slot into Square D panels that support QDA-series devices, delivering a reliable fit and predictable performance when it matters most.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance: replace a worn or failed breaker to restore 240V circuit protection quickly.\u003c\/li\u003e \u003cli\u003eRetrofit: upgrade legacy panels to modern 125A, 2-pole protection for improved safety margins.\u003c\/li\u003e \u003cli\u003eReplacement stock: keep on-hand for service calls in commercial or light industrial environments.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and installation tips\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, confirm the breaker fits your panel and matches the required ratings. The QDA221251 part number should be treated as the definitive reference for compatibility with your Square D panel. When installing, ensure the subpanel or main panel is de-energized and follow standard safety practices for electrical work. Use the appropriate tools and torque specifications as outlined by your panel manufacturer to maintain a secure, reliable connection.\u003c\/p\u003e \u003cp\u003eIn short, the Square D QDA221251 125A 2-Pole 240V circuit breaker is a purpose-built, dependable choice for professionals needing exact-fit protection for 240V circuits, with clear guidance on compatibility and practical, real-world use cases that align with maintenance, retrofit, and replacement scenarios.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46425621659810,"sku":"QDA221251","price":1475.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-qda221251-circuit-breaker-125a-2-pole-240v-768.webp?v=1789431841","url":"https:\/\/www.ampstate.com\/products\/square-d-qda221251-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}