Siemens HFD63B125L - 125 A, 600 V, 3-Pole Circuit Breaker | AmpState

Siemens HFD63B125L is a 125 A, 600 V, 3-pole molded‑case circuit breaker designed to protect branch circuits in panelboards and loadcenters with precision and durability. Built to handle the demands of three‑phase distribution, this device delivers reliable overcurrent and short‑circuit protection where it matters most. Key advantages you’ll notice - Space‑savvy design: Compact molded‑case construction helps you maximize panel space without sacrificing protection. - Reliable protection: The thermal‑magnetic trip unit provides stable, repeatable performance across a range of fault conditions, helping minimize nuisance trips while ensuring fast isolation when needed. - Seamless OEM compatibility: Specifically designed to pair with matching Siemens OEM loadcenters and panelboards, ensuring coordinated protection and straightforward installation. - Versatile across settings: Suitable for residential, commercial, and light industrial applications where solid three‑phase protection is required. Who this is for - Electrical contractors and installers upgrading or upgrading panelboards in light commercial or industrial spaces. - Building owners and facilities managers looking for a dependable, compatible replacement breaker within Siemens’ ecosystem. - Projects requiring robust 3‑pole protection on 3‑phase circuits while maintaining efficient panel layout. Why it matters - With a 125 A rating, 600 V maximum voltage, and three poles, the HFD63B125L is engineered for modern distribution panels, delivering clear trip characteristics and predictable performance under fault conditions. - Its compatibility with Siemens OEM panels means you can expect coordinated protection devices, simplifying troubleshooting and future maintenance. Technical specifications at a glance - Manufacturer: Siemens - Part Number: HFD63B125L - Type: Thermal-magnetic molded case circuit breaker - Amperage Rating: 125 A - Voltage Rating: 600 V - Number of Poles: 3 - Application: Branch circuit overcurrent and short-circuit protection Practical usage notes - Ideal for inclusion in panelboards and loadcenters that are designed for Siemens molded‑case breakers of the HFD63 family. - Select 3‑pole devices like the HFD63B125L when protecting 3‑phase loads or where a 3‑pole configuration is required to ensure balanced protection across all phases. - When planning a replacement or upgrade, verify panel compatibility with Siemens OEM components to preserve coordinated protection and easier future servicing. Elevate your electrical protection with the Siemens HFD63B125L—a purpose‑built, reliable choice for safeguarding three‑phase systems in residential, commercial, and light industrial environments.