{"product_id":"siemens-qj3b125ha01-circuit-breaker","title":"Siemens | QJ3B125HA01 | Circuit Breaker | 125A | 3-Pole | 240V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens \u003cstrong\u003eQJ3B125HA01\u003c\/strong\u003e circuit breaker delivers dependable protection for three‑phase 240V systems with a \u003cstrong\u003e125 A\u003c\/strong\u003e rating. This \u003cstrong\u003e3‑pole\u003c\/strong\u003e bolt‑on device is designed for maintenance, retrofit, and replacement projects where exact specifications and a seamless fit matter. If your panel requires a \u003cstrong\u003eQJ bolt‑on\u003c\/strong\u003e breaker, this part number is the most reliable reference for compatibility.\u003c\/p\u003e \u003ch3\u003eWhy this Siemens breaker stands out\u003c\/h3\u003e\n\u003cp\u003eBuilt for secure, durable performance in panels that accept QJ bolt‑on breakers, the QJ3B125HA01 combines robust mounting with clear electrical protection. The 3‑pole configuration ensures balanced protection across all three phases, helping protect connected equipment and maintain system integrity in 3‑phase installations.\u003c\/p\u003e \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 3‑Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting method:\u003c\/strong\u003e Bolt‑On\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e QJ3B125HA01\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance or retrofit projects in commercial or industrial panels distributing 3‑phase 240V loads\u003c\/li\u003e \u003cli\u003eReplacement for aging or incompatible breakers where exact 125 A, 3‑pole, bolt‑on specs are required\u003c\/li\u003e \u003cli\u003ePanel upgrades that demand precise compatibility with Siemens QJ bolt‑on breakers\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility notes\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, confirm fit and ratings for your specific panel. The \u003cstrong\u003eQJ3B125HA01\u003c\/strong\u003e part number is the best reference for compatibility with Siemens panels designed to accept QJ bolt‑on breakers. If your equipment calls for a QJ bolt‑on device, this breaker provides a direct, reliable replacement path.\u003c\/p\u003e \u003ch3\u003ePractical installation tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify panel labeling and documentation to ensure the breaker's specifications align with your system requirements\u003c\/li\u003e \u003cli\u003eFollow your panel’s installation guide for proper bolt torque and lugs to ensure a secure, electrical‑safe connection\u003c\/li\u003e \u003cli\u003eHandle the breaker with care to preserve the trip mechanism and contact integrity for long‑term reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427419017378,"sku":"QJ3B125HA01","price":510.0,"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\/siemens-qj3b125ha01-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}