Siemens HFD63B110 - 110 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Siemens HFD63B110 is a 110A, 600V, 3-pole bolt-on molded case circuit breaker designed to deliver reliable branch circuit protection in panelboards and load centers. Built for demanding environments, it combines a rugged bolt-on mounting with a trusted thermal-magnetic trip system to keep your electrical system safe and up to code.

Why this breaker stands out

• Secure bolt-on mounting—provides a rigid, vibration-resistant bus connection that stays in place even in busy electrical panels, reducing the risk of loose connections and intermittent trips.
• Thermal-magnetic trip unit—delivers stable, repeatable protection performance by responding accurately to both sustained overloads and sudden short circuits.
• 3-pole configuration—ensures simultaneous disconnection across all phases in 3-phase systems, enhancing safety and power continuity for multi-wire circuits.
• 600V voltage rating—suitable for commercial and light industrial applications where higher-voltage protection is required, not just standard residential panels.
• 110A amperage rating—provides appropriate protection for medium-load feeders and distribution branches without unnecessary interruptions.
• OEM-compatible design—specifically engineered to fit matching Siemens load centers and panelboards for a seamless, code-compliant installation.

Ideal applications

Designed for residential, commercial, and light industrial environments, the HFD63B110 is a practical choice for protecting branch circuits in both new installations and upgrades. Use it in service panels, subpanels, and main distribution panels where reliable overcurrent and short-circuit protection is essential.

Technical specifications

• Manufacturer: Siemens
• Part number: HFD63B110
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 110A
• Voltage rating: 600V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

With the Siemens HFD63B110, you get dependable protection, straightforward installation, and compatibility with Siemens panel systems—all designed to keep electrical systems safer and more efficient in everyday commercial and light industrial settings.