Siemens HFXD63B150 - 150 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Siemens HFXD63B150 is a 150 A, 600 V, 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for environments where vibration and dynamic electrical loads are a reality, this breaker combines robust mounting with precise protection performance to keep critical circuits safe and uninterrupted.

Why this breaker stands out

• Secure bolt-on mounting: a rigid, vibration-resistant bus connection that reduces movement and wear over time, helping prevent nuisance trips and loosening under heavy use.
• Thermal-magnetic trip unit: delivers stable, repeatable protection by responding to both overloads and short circuits, so you’re covered from minor slope changes to high fault currents.
• 3-pole configuration: ideal for 3‑phase systems common in commercial and light industrial applications, ensuring synchronized protection across all phases.
• 600 V rating: supports higher-voltage distribution needs in modern electrical boxes and equipment rooms.
• OEM compatibility: designed to work seamlessly with matching Siemens OEM load centers and panelboards, simplifying installation and serviceability.
• Versatile application: suitable for residential, commercial, and light industrial environments where durable, code-compliant protection is essential.

Who benefits from the Siemens HFXD63B150

Electrical contractors, facility managers, and service technicians who install or upgrade panelboards and load centers will appreciate the reliability and straightforward integration of this 3‑pole, bolt-on breaker. It’s an excellent choice when you need a robust solution for distributing power safely across multiple 3‑phase circuits in offices, retail spaces, small manufacturing areas, and healthcare or data-adjacent environments where downtime isn’t an option.

Practical use cases

• Replacing aging or damaged breakers in existing Siemens panelboards to restore dependable protection without rewiring an entire panel.
• Feeding critical 3‑phase equipment such as HVAC systems, motors, and conveyors in commercial or light industrial settings.
• Upgrading a distributed power configuration in new-build or retrofit projects where a rigid, vibration-resistant connection is beneficial.

Technical snapshot

• Manufacturer: Siemens
• Part Number: HFXD63B150
• Type: Thermal-magnetic molded case circuit breaker
• Amperage: 150 A
• Voltage: 600 V
• Poles: 3
• Mounting: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection in panelboards and load centers

Equip your electrical distribution with a breaker that pairs Siemens reliability with practical, real-world performance. The HFXD63B150 is built to protect the power you rely on, where it matters most — in your panelboards and load centers.