Siemens HDK3B100 Circuit Breaker, 100A, 3-Pole, 600V

The Siemens HDK3B100 Circuit Breaker is engineered for demanding industrial environments, delivering dependable protection for service entrances, maintenance work, and replacement projects. Designed to keep critical equipment and personnel safe, this 3‑pole unit handles the realities of three‑phase power distribution with clarity and reliability.

• Amperage: 100 A
• Poles: 3-Pole
• Voltage rating: 600 V
• Part number: HDK3B100

Key benefits in real-world use:

• Ideal for industrial electrical service applications where robust three‑phase protection is essential, such as manufacturing lines, distribution panels, and large equipment feeds.
• Designed for maintenance and replacement projects, allowing quick swap‑in compatibility alongside existing Siemens or compatible electrical assemblies by matching the part number (HDK3B100).
• Provides clear, dependable interruption of power in three‑phase circuits up to 600 V, helping to minimize downtime during outages and repairs.
• Part of Siemens’ trusted protection suite, offering consistent performance and integration with compatible Siemens accessories and safety standards.

Compatibility and guidance:

To ensure a proper fit, verify compatibility using the HDK3B100 part number against your application requirements. If you’re unsure about fit or replacement strategy, send a message—we’re ready to help confirm compatibility and coordinate a smooth installation.

Who should consider the HDK3B100:

• Electrical contractors performing industrial installations or panel refurbishments
• Facility engineers and maintenance teams overseeing three‑phase power feeds
• Plant managers seeking reliable, long‑lasting circuit protection for critical systems

Practical tips for optimal use:

• Keep a compatible spare on hand for planned maintenance to reduce downtime.
• Plan replacements around your three‑phase distribution layout, ensuring all three legs are metered and protected correctly.
• Adhere to standard safety practices and installation guidelines when handling high‑voltage equipment.