Siemens HFXD63B125L - 125 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Siemens HFXD63B125L is a robust 125A, 600V, 3-pole molded case circuit breaker built to protect your electrical distribution with precision and reliability. Designed for use in panelboards and load centers, this breaker delivers dependable branch circuit overcurrent and short-circuit protection where it matters most.

Why this breaker stands out

• Compact molded case design maximizes usable space inside panels, reducing clutter while maintaining easy access for service and maintenance.
• Thermal-magnetic trip unit delivers stable, repeatable protection across varying temperatures and load conditions—your circuits stay protected without nuisance trips during normal operation.
• 125A, 600V, 3-pole configuration provides comprehensive protection for three-phase systems and feeds in commercial or light industrial environments.
• OEM panel compatibility engineered to mate seamlessly with matching Siemens OEM loadcenters and panelboards, simplifying installation and ensuring reliable performance.
• Versatile application suitable for residential, commercial, and light industrial settings where dependable branch circuit protection is essential.

What problems does it solve?

In modern electrical setups, space and dependable trip behavior are critical. The HFXD63B125L tackles both by offering a compact form factor that leaves room for other devices in your panel while guaranteeing clear, predictable protection during overloads and short circuits. Its thermal element detects gradual overloads, while the magnetic element responds instantly to high-current faults, reducing the risk of equipment damage and downtime.

Ideal use cases

• Upgrading or stocking replacement parts for residential panelboards and commercial load centers
• Feeder protection in small to mid-size commercial installations
• Light industrial electrical distributions where steady, reliable trip performance is critical

Technical snapshot

• Siemens
• HFXD63B125L
• Thermal-magnetic molded case circuit breaker
• 125A
• 600V
• 3
• Branch circuit overcurrent and short-circuit protection

Choose the Siemens HFXD63B125L when you need a trusted, space-efficient solution that delivers precise protection for three-phase circuits in panelboards and load centers. It’s the right balance of compact design, reliable protection, and OEM compatibility that electricians and facilities managers rely on for consistent performance day after day.