{"product_id":"siemens-qj2b125l-circuit-breaker","title":"Siemens | QJ2B125L | Circuit Breaker | 125A | 2-Pole | 240V","description":"\u003cdiv\u003eSiemens QJ2B125L is a dependable circuit protection solution designed for demanding maintenance, retrofit, and replacement projects. This 125A, 2-pole device delivers reliable overcurrent protection for 240V circuits, helping safeguard electrical systems and keep critical equipment up and running. \u003ch3\u003eKey specifications\u003c\/h3\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 2-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e QJ2B125L\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Circuit protection for 240V two‑hot-leg circuits in compatible panels\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this Siemens circuit breaker stands out\u003c\/h3\u003e\n\u003cp\u003eThe QJ2B125L is built to support quick, secure replacement in panels that require the Siemens QJ2B125L reference. Its two‑pole design means simultaneous isolation of both hot legs on a 240V circuit, enhancing safety during servicing. With Siemens’ engineering, expect a robust enclosure and dependable performance that technicians rely on for long-term protection of wiring, outlets, and connected equipment.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance and service upgrades in commercial electrical panels that accept QJ series breakers\u003c\/li\u003e \u003cli\u003eRetrofit projects where a precise 125A, 2-pole, 240V specification is required\u003c\/li\u003e \u003cli\u003eReplacement installations in industrial and building electrical systems needing reliable circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation \u0026amp; compatibility notes\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, verify fit and ratings against your panel’s labeling. The part number QJ2B125L is the best reference for compatibility. If your panel\/cover indicates support for Siemens QJ breakers, this unit will slot in as a direct replacement for the corresponding 125A, 2-pole, 240V configuration.\u003c\/p\u003e \u003ch3\u003eWhat problems does it solve?\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eTimely replacement to restore circuit protection after a trip or wear-related issues\u003c\/li\u003e \u003cli\u003eConsistent protection for 240V circuits powering critical equipment, maintaining uptime\u003c\/li\u003e \u003cli\u003eAccurate amperage rating ensures your system stays within designed electrical limits\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical tips for best results\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eKeep a labeled spare on hand for proactive maintenance in serviceable panels\u003c\/li\u003e \u003cli\u003eStore and handle breakers in a dry, cool environment to preserve performance\u003c\/li\u003e \u003cli\u003eAlways power down the panel and follow safety procedures during replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427429929122,"sku":"QJ2B125L","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-qj2b125l-circuit-breaker-125a-2-pole-240v-245.webp?v=1789722525","url":"https:\/\/www.ampstate.com\/products\/siemens-qj2b125l-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}