Siemens BQ3B035H 35A 3-Pole 240 V Circuit Breaker Potential Transformer

Meet the Siemens BQ3B035H — a dependable 3-pole circuit breaker engineered for robust protection in 3‑phase electrical systems. With a 35 A current rating and a 240 V voltage rating, this unit is purpose-built for demanding industrial and commercial applications while maintaining precise control over power distribution. The BQ3B035H isn’t just about interrupting faults; it’s designed to play nicely with modern monitoring solutions thanks to its potential transformer interface, enabling accurate sensing for metering and protective relays without adding complexity to your panel.

Key advantages of the Siemens BQ3B035H

• Three-pole configuration provides balanced protection across all phases in a 3‑phase system, ensuring consistent fault response and reliable motor and equipment protection.
• 35 A current rating offers suitable protection for feeders and branch circuits while minimizing nuisance trips in dynamic load environments.
• 240 V electrical rating aligns with standard building distribution and industrial power architectures, delivering compatibility across a wide range of installations.
• Potential transformer interface supports integration with metering, SCADA, and protective relay schemes, giving you actionable current and voltage signals for monitoring without extra hardware complexity.
• Siemens precision and compatibility designed for seamless integration with Siemens protection ecosystems, panels, and accessories, reducing installation headaches and ensuring consistent performance.
• Part number clarity BQ3B035H ensures easy ordering, stocking, and cross-reference in service manuals and maintenance workflows.

Ideal use cases

• Three-phase distribution panels in commercial buildings, data centers, and manufacturing halls where reliable protection and real-time monitoring are essential.
• Motor control centers powering pumps, compressors, and fans, where stable protection and PT-compatible sensing improve safety and uptime.
• Industrial HVAC and processing lines that benefit from accurate electrical measurements fed to building management systems.

Why this matters for you

If you’re designing or upgrading a 3‑phase power system, the BQ3B035H delivers not just fault protection but also a clear path to enhanced visibility. The potential transformer interface means you can wire the breaker into protective relays or energy meters to monitor current trends, detect anomalies early, and optimize energy use — all while maintaining straightforward maintenance and replacement with a trusted Siemens component.

Specifications at a glance

• Current rating: 35 A
• Poles: 3
• Voltage rating: 240 V
• Part number: BQ3B035H
• Application: Three-phase protection with potential transformer interfacing for monitoring and relays

Upgrade your three-phase protection strategy with the Siemens BQ3B035H. It combines reliable overcurrent protection with a practical path to modern monitoring and control, keeping your power distribution safer, smarter, and more observable.