Siemens | HFXD63B100L | Circuit Breaker | 100A | 3-Pole | 600V

Meet the Siemens HFXD63B100L circuit breaker—a dependable, 3-pole protection device engineered for demanding electrical systems. With a 100 A rating and a 600 V operating capacity, this breaker is built to safeguard large circuits in commercial, industrial, and retrofit environments. Designed for maintenance, retrofit, and replacement, it’s the precise choice when matching specs matters most.

Key specifications

• Amperage: 100 A
• Poles: 3-Pole
• Voltage rating: 600 V
• Part number: HFXD63B100L

Why this Siemens model stands out

• Trustworthy Siemens design known for reliable trip performance and long-term durability in load-heavy panels.
• Specifically suited for maintenance, retrofit, and replacement tasks where exact compatibility is critical, reducing guesswork during panel upgrades.
• Clear, unmistakable labeling and standard 3-pole configuration streamline installation in appropriate three-phase systems.
• Versatile for a range of applications—from industrial equipment feeders to large commercial distribution circuits—where consistent electrical protection is essential.

Ideal use cases

• Retrofits in Siemens-compatible panels that require a 100 A, 3-pole, 600 V circuit breaker.
• Maintenance replacements to restore original protection levels without changing other components.
• New installations that demand robust three-phase circuit protection for demanding loads.
• Electrical upgrades in facilities where safety, reliability, and uptime are priorities.

Compatibility and installation tips

• Always confirm fit and ratings before ordering to ensure seamless integration with your panel.
• The part number (HFXD63B100L) is the best reference for compatibility; cross-check against your panel’s documentation or labeling.
• Verify that your panel is rated for 600 V operation and supports a 3-pole device for the intended circuit.
• Installation should be performed by a qualified electrician following all local codes and safety practices.

Maintenance and safety considerations

• Periodically inspect for signs of wear or nuisance tripping; replace promptly to maintain protection.
• Store and handle the unit in a clean, dry environment to prevent corrosion or contamination that could affect trip performance.
• When servicing, de-energize the system and use appropriate PPE to ensure safety for personnel and equipment.