Siemens | BQCH3B040 | Circuit Breaker | 40A | 3-Pole | 480V | 14kA | Bolt-On

The Siemens BQCH3B040 circuit breaker is a robust, bolt-on protection solution designed for demanding 3‑phase, 480V electrical environments. With a 40A rating and 3 poles, this unit delivers reliable protection for motors, feeders, and distribution circuits while fitting seamlessly into retrofit and replacement projects that require exact specifications.

• Amperage: 40A
• Poles: 3‑Pole
• Voltage: 480V
• Interrupting capacity: 14kA
• Mounting: Bolt-On
• Part reference: BQCH3B040

Why this breaker stands out

Designed for installations where precise specs are non-negotiable, the BQCH3B040 provides dependable overcurrent protection in 480V systems. The bolt-on mounting offers secure, field-friendly installation in compatible panels, making it an excellent choice for both new panel builds and legacy upgrades. The dedicated part number ensures you’re selecting the exact Siemens unit required for your configuration, reducing the risk of mismatches during maintenance or retrofits.

Ideal use cases

• Industrial or commercial facilities with 3‑phase 480V distribution
• Motor control centers and feeders requiring 40A protection
• Retrofit projects or replacements where the BQCH3B040’s specifications align with existing gear
• Maintenance schedules that prioritize compatibility and quick swap-in replacements

Compatibility and installation considerations

Before ordering, verify that your panel or enclosure supports bolt-on breakers of this style and that the system voltage and current ratings align with 480V and 40A. The BQCH3B040’s compatibility is best confirmed using the part number as the primary reference. When installing, follow standard electrical safety practices and the equipment’s installation guidelines to ensure reliable performance and full protective capability.

Equip your system with a trusted Siemens protection device designed for 3‑phase 480V operation. The BQCH3B040 delivers precise overcurrent protection, straightforward bolt-on mounting, and a clear reference point for compatibility in complex electrical environments.