Siemens | BQ2B045H | Circuit Breaker | 2-Pole | 22kA | Bolt-On

Siemens BQ2B045H stands out as a dependable 2-pole, bolt-on circuit breaker built for demanding maintenance, retrofit, and replacement projects. With a 22kA interrupting capacity, it provides assertive fault-current protection while helping keep downtime to a minimum in Siemens-compatible electrical systems.

Key specifications

• Poles: 2-Pole
• Interrupting rating: 22kA
• Mounting: Bolt-On
• Part reference: BQ2B045H

Why this breaker matters

• Precise compatibility: The exact part number BQ2B045H is designed to align with Siemens panels and distribution setups that require a two-pole, bolt-on device.
• Reliable protection for both conductors: A true two-pole design guarantees coordinated disconnection, reducing arc risk and protecting downstream equipment.
• Streamlined maintenance and upgrades: Bolt-On mounting facilitates quicker service, easier replacement, and cleaner installation in retrofit scenarios.
• High-fault resilience: The 22kA interrupting capacity supports robust protection in systems with elevated fault currents, helping to preserve equipment life and uptime.
• Clear reference for procurement: Using the BQ2B045H part number ensures you’re selecting the exact specification required for your application.

Applications and practical use

Ideal for Siemens-compatible electrical panels and distribution boards where a reliable 2-pole, bolt-on breaker is required. Use it in service upgrades, panel retrofits, or as a direct replacement in systems that specify the BQ2B045H model. This breaker is suited for environments where fast, confident disconnection and compatibility with existing infrastructure are priorities.

Compatibility and ordering guidance

Notes: Confirm fit and ratings before ordering. The BQ2B045H part number is the best reference for compatibility, ensuring you match the exact device to your panel and electrical distribution needs.