{"product_id":"siemens-qj23b125a01-circuit-breaker","title":"Siemens | QJ23B125A01 | Circuit Breaker | 125A | 3-Pole | 240V | 10kA | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens \u003cstrong\u003eQJ23B125A01\u003c\/strong\u003e Circuit Breaker—a robust 125A, 3-Pole device designed for 240V systems. With a 10kA interrupting capacity and bolt-on mounting, this breaker delivers dependable overcurrent protection for demanding maintenance, retrofit, and replacement projects. Its precise specs and durable construction make it a trusted choice for keeping 3-phase electrical circuits safe and reliable.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 125A\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: 10kA\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting\u003c\/strong\u003e: Bolt-On\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy these specs matter: The 125A rating is well-suited for protecting feeders and branch circuits in 3-phase 240V panels, while the 10kA interrupting capacity provides a strong margin against high fault currents. The bolt-on design offers secure, vibration-resistant installation in compatible Siemens panels, contributing to long-term protection and easier service access.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance and service replacements that require exact Siemens QJ series parts\u003c\/li\u003e \u003cli\u003eRetrofits upgrading equipment to a safer, higher-capacity 125A protection in 3-phase systems\u003c\/li\u003e \u003cli\u003eNew installations in commercial or industrial settings where a reliable bolt-on breaker is preferred\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eCompatibility note\u003c\/strong\u003e: Confirm fit and ratings before ordering. The part number \u003cstrong\u003eQJ23B125A01\u003c\/strong\u003e is the best reference for ensuring compatibility with your panel or enclosure.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46424767692962,"sku":"QJ23B125A01","price":1006.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/siemens-qj23b125a01-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}