{"product_id":"siemens-hqj23b125h00s01-circuit-breaker","title":"Siemens | HQJ23B125H00S01 | Circuit Breaker | 125A | 3-Pole | 240V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens HQJ23B125H00S01 is a 125-amp, 3-pole, 240-volt bolt-on circuit breaker designed for reliable overcurrent protection in demanding electrical environments. Built for maintenance, retrofit, and replacement projects, this breaker delivers precise performance where exact specifications matter most.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAmperage: 125A\u003c\/li\u003e \u003cli\u003ePoles: 3-Pole\u003c\/li\u003e \u003cli\u003eVoltage: 240V\u003c\/li\u003e \u003cli\u003eMounting: Bolt-On\u003c\/li\u003e \u003cli\u003ePart number: HQJ23B125H00S01\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this matters\u003c\/h3\u003e\n\u003cp\u003eWhen upgrading or repairing a Siemens electrical system, compatibility is essential. This bolt-on 125A three-pole breaker is engineered to fit precise panel configurations and deliver dependable protection for three-phase circuits at 240V. Using the exact part number HQJ23B125H00S01 helps ensure you’re sourcing a component that aligns with the original design, reducing the risk of misfits and trips in critical applications.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eNew installations in commercial or light industrial panels that require three-phase protection at 240V.\u003c\/li\u003e \u003cli\u003eRetrofits to replace aging breakers without altering enclosure hardware.\u003c\/li\u003e \u003cli\u003eMaintenance and spare parts planning for Siemens-based electrical systems that run on 240V three-phase power.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and compatibility\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, confirm fit and ratings to match the specific Siemens panel or distribution board. The part number HQJ23B125H00S01 is the best reference for compatibility. Follow standard lockout\/tagout procedures, ensure power is fully isolated, and use appropriate torque and mounting methods for bolt-on connections as outlined in your panel’s installation guide.\u003c\/p\u003e \u003ch3\u003eCare and best practices\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eKeep spare breakers organized with their corresponding panel locations to simplify future maintenance.\u003c\/li\u003e \u003cli\u003eInspect for signs of wear, overheating, or corrosion during routine checks; replace if integrity is compromised.\u003c\/li\u003e \u003cli\u003eLabel circuits clearly after installation to support safe operation and future servicing.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned to deliver consistent protection in Siemens systems, this 125A 3-Pole 240V bolt-on circuit breaker offers a precise, durable solution for upgraded panels, reliable retrofits, and long-term replacement strategy.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427072266402,"sku":"HQJ23B125H00S01","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a0994f42-7fad-49d1-911a-c2784022b8c9.png?v=1765492979","url":"https:\/\/www.ampstate.com\/products\/siemens-hqj23b125h00s01-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}