Siemens HFD63B100 100A 3P 600V Circuit Breaker | AmpState

Meet the Siemens HFD63B100 — a purpose-built circuit breaker designed to deliver dependable overcurrent protection for panelboards, load centers, and electrical distribution systems. This 100 A, 3-pole device is engineered for reliability in demanding environments, helping keep critical electrical infrastructure running smoothly.

Key specifications

• Manufacturer: Siemens
• Part Number: HFD63B100
• Product Type: Circuit Breaker
• Amperage: 100 A
• Poles: 3
• Voltage: 600V
• Availability: From AmpState

Why this Siemen's breaker stands out

Designed for panel builders, maintenance teams, and spare inventory, the HFD63B100 emphasizes a direct part-number match — minimizing fitment guesswork and reducing downtime during replacements. Its 3-pole configuration provides robust protection for multi-phase circuits, while the 600-volt rating covers a wide range of industrial and commercial applications. By choosing a genuine Siemens part, you align with proven design standards and consistent performance across your electrical distribution network.

Practical use cases

• Replacement in existing Siemens panelboards and load centers where a precise part match is essential.
• Spare inventory for maintenance fleets, enabling rapid service without scrambling for alternatives.
• New installation projects that require a reliable, OEM-listed 3-pole 100 A circuit protection solution.

How it helps you run safer, more efficient systems

The HFD63B100 delivers predictable interruption protection for circuits up to 100 A, guarding against overloads and short circuits. In daily operations, this translates to fewer unexpected outages, easier diagnostics, and streamlined maintenance workflows. For panel builders, using a dedicated Siemens part simplifies documentation and compatibility checks, ensuring your assemblies meet expected performance standards from day one.

How it compares to alternative options

While many generic breakers can fit a variety of enclosures, the HFD63B100 is purpose-built for Siemens panel ecosystems. Its part-number specific compatibility reduces the risk of mismatched trip curves or mounting incompatibilities, saving time during installation and service. For teams managing multi-brand environments, sticking with this Siemens part in applicable panels helps maintain uniform protection strategy and clearer spare part catalogs.

Guidance for compatibility and support

Need help matching a part number or confirming fit? Message us and our team will help verify whether the HFD63B100 is the right choice for your panelboard or load center configuration. AmpState ensures you can source authentic Siemens components with confidence and speed.