Siemens | HGB3K025B | Circuit Breaker | 25A | 3-Pole | 600V | Bolt-On

Siemens HGB3K025B is a robust, OEM-grade circuit breaker designed for reliable protection in three-phase power systems. With a 25-amp rating, 3-pole configuration, and a 600-volt maximum, this bolt-on unit is built to handle demanding industrial panels, retrofit projects, and replacement scenarios where precise electrical protection matters.

Key specifications

• Amperage: 25 A
• Poles: 3-Pole
• Voltage rating: 600 V
• Mounting style: Bolt-On
• Part number: HGB3K025B
• Intended use: Maintenance, retrofit, and replacement in compatible panels

Why this bolt-on breaker stands out

• Secure, durable installation thanks to bolt-on mounting, ensuring solid electrical contact in compatible Siemens panels.
• Three-pole design provides balanced protection for three-phase circuits, helping protect motors, drives, and control equipment from overloads and short circuits.
• 600 V rating makes it suitable for industrial power distribution environments where higher voltage safety and reliability are essential.
• Part-number specificity (HGB3K025B) makes cross-compatibility checks straightforward—use the exact reference when matching to panels and documentation.

Ideal use cases

• Retrofits and upgrades in Siemens HGB-series or compatible panels that require a 25A, 3-pole, 600V bolt-on breaker.
• Maintenance replacements to restore trusted protection in three-phase machinery, conveyors, and manufacturing lines.
• New installations where a reliable, OEM-grade circuit protection solution is needed for 3-phase distribution.

Installation and compatibility notes

Before ordering, verify fit and ratings for your specific panel configuration. The HGB3K025B part number is the most reliable reference to ensure compatibility with your Siemens equipment and to match the required amperage, pole count, and voltage rating.

Practical tips for best results

• Coordinate with your panel model and bus configuration to confirm bolt-on mounting is supported.
• Document the exact part number (HGB3K025B) in maintenance records to simplify future replacements and audits.
• Follow standard electrical safety practices during installation and perform a functional test after replacement or retrofit.