Siemens HFD63B225 - 225 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Siemens HFD63B225 is a 225A, 600V, 3-pole bolt-on molded case circuit breaker designed to deliver reliable branch-circuit protection for panelboards and load centers. Built for rugged performance, it offers a secure mounting method that stands up to vibration and continuous operation in demanding environments.

• Secure bolt-on mounting ensures a rigid, vibration-resistant bus connection for dependable electrical contact and long-term reliability.
• Thermal-magnetic trip unit provides stable, repeatable protection across varying loads and temperatures, reducing nuisance trips while safeguarding wiring and connected devices.
• OEM-compatible design is engineered to integrate seamlessly with matching Siemens panelboards and load centers for a cohesive protection system.
• Versatile for multiple settings ideal for residential, commercial, and light industrial applications where robust overcurrent and short-circuit protection is critical.

Technical specifications at a glance

• Manufacturer: Siemens
• Part Number: HFD63B225
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 225 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Why choose the HFD63B225 for your electrical system? In panelboards and load centers where space is at a premium and reliability cannot be compromised, this 3-pole breaker delivers balanced protection for 3-phase systems. The combination of a secure bolt-on connection and a tuned thermal-magnetic trip unit minimizes unplanned outages, protects conductors and equipment downstream, and supports safer, more predictable performance in both new installations and upgrades.

Practical use cases include 3-phase commercial subpanels, residential service upgrades that require sturdy 225 A protection, and light-industrial control panels where dependable circuit protection is essential. Pair this breaker with compatible Siemens load centers for a streamlined, long-lasting protection solution that’s ready to handle everyday demand and occasional surges alike.

Installation and maintenance tips

• Confirm compatibility with your Siemens OEM load center before installation
• Apply proper torques on mounting bolts to maintain a solid, vibration-free connection
• Periodically inspect for signs of overheating or wear on the breaker and bus connections