Siemens HFXD63B175 - 175 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet Siemens HFXD63B175, a 175A, 600V, 3-pole bolt-on molded case circuit breaker designed to guard your electrical distribution with precision. Built for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers, this unit keeps critical circuits safe so your system stays up and running.

• Bolt-on mounting delivers a secure, vibration-resistant bus connection for a durable, long-term installation.
• Thermal-magnetic trip unit provides stable, repeatable protection by responding to both overload and short-circuit conditions, reducing nuisance trips and improving reliability.
• Three-pole configuration is ideal for three-phase electrical systems common in commercial and light industrial environments.
• OEM-compatible design ensures seamless integration with matching Siemens load centers and panelboards for a cohesive protection solution.
• Versatile protection suited for residential, commercial, and light industrial applications requiring robust branch circuit overcurrent and short-circuit protection.

Technical snapshot

• Manufacturer: Siemens
• Part Number: HFXD63B175
• Type: Thermal-magnetic molded case circuit breaker (MCCB)
• Amperage Rating: 175 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use scenarios

• Upgrading panelboards or load centers in commercial spaces that require reliable 3-phase protection.
• Replacing a failed or outdated 3-pole MCCB with a proven Siemens solution to restore safe operation.
• Installing in new construction where a rugged, bolt-on breaker is specified for durable bus connections.
• Designing electrical systems for light industrial environments where stable trip behavior under varying loads is critical.

Why choose this solution

The HFXD63B175 combines a robust bolt-on design with a thermal-magnetic trip mechanism, delivering dependable protection that adapts to real-world load conditions. Its three-pole configuration and 600V rating make it a practical choice for three-phase branch circuits, while OEM compatibility ensures a straightforward retrofit or new-install integration with Siemens panelboards. If you’re aiming for a resilient, code-conforming protection strategy that minimizes downtime and protects essential equipment, this breaker from AmpState is a strong fit.

Tips for top performance: verify panelboard compatibility with the HFXD63B175 bolt-on footprint, confirm the three-phase alignment matches your service, and plan for proper torque and secure mounting during installation to maintain a solid electrical connection.