Siemens HFD63B100L - 100 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens HFD63B100L — a 100 A, 600 V, 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit protection for panelboards and load centers. Built for real-world reliability, it combines rugged construction with precise protective performance to keep electrical systems safe and stable.

The design emphasizes a secure bolt-on mounting for a rigid, vibration-resistant bus connection, helping to prevent loose contacts in demanding environments. Its thermal-magnetic trip unit provides stable, repeatable protection, responding accurately to overcurrent and short-circuit conditions while minimizing nuisance trips. This makes it a smart choice for installations where reliability and consistent performance matter as much as protection.

Compatibility is a key focus: the HFD63B100L is designed to work with matching OEM Siemens load centers and panelboards, enabling straightforward replacements and uniform trip characteristics across your system. This makes it especially suitable for ongoing maintenance, upgrades, or expansions in residential, commercial, and light industrial settings.

Key benefits

• Secure, vibration-resistant installation: Bolt-on mounting creates a solid connection to the bus, improving long-term reliability in spaces with movement or vibration.
• Reliable thermal-magnetic protection: Combines thermal and magnetic tripping for dependable response to a range of fault conditions.
• OEM-panel compatibility: Specifically designed to match Siemens load centers and panelboards, simplifying swaps and ensuring consistent performance.
• Versatile applications: Ideal for residential, commercial, and light industrial branch-circuit protection needs.

Specifications at a glance

Amperage rating: 100 A

Voltage rating: 600 V

Poles: 3

Mounting style: Bolt-on

Type: Thermal-magnetic molded case circuit breaker

Typical use: Branch circuit overcurrent and short-circuit protection

Ideal use scenarios

• Upgrading residential service panels to protect subpanels and heavy-load circuits with a single, reliable solution.
• Expanding commercial panelboards while maintaining identical protective characteristics across new and existing circuits.
• Deployment in light industrial environments where connections must endure vibration and movement without compromising safety.
• Retrofits and service replacements that benefit from OEM compatibility for easier maintenance and future upgrades.

With the Siemens HFD63B100L, you’re choosing a breaker that pairs robust construction with precise protection, designed to integrate seamlessly into Siemens panelboards and load centers. It’s a practical, long-term solution for safeguarding electrical systems in a wide range of applications.