Siemens BQ3B100 100A 3P 240V Circuit Breaker, Bolt-On | AmpState

Meet the Siemens BQ3B100—a 3-pole circuit breaker engineered for dependable protection in panelboards, load centers, and broader electrical distribution systems. With its bolt-on design, this device delivers secure, vibration-resistant mounting that’s especially valuable during retrofit work and maintenance where keeping a consistent part number matters.

What makes the Siemens BQ3B100 unique

• Bolt-On mounting for straightforward installation and robust connections in commercial and industrial panels.
• 100 A, 3-pole, 240 V rating—ideal for protecting multi-wire circuits and feeder lines in demanding environments.
• Part Number stability (BQ3B100) supports efficient inventory management and retrofit planning where exact replacements are required.
• Siemens reliability built into a circuit protection device trusted in electrical distribution systems.
• AmpState availability provides convenient access and support to verify fit and compatibility when you’re planning a upgrade or inventory refresh.

Key specifications

• Manufacturer: Siemens
• Part Number: BQ3B100
• Product Type: Circuit Breaker
• Amperage: 100 A
• Poles: 3
• Voltage: 240 V
• Mounting: Bolt-On

Ideal use scenarios

This breaker is well-suited for retrofit projects where existing panel schedules rely on a fixed part number, ensuring seamless replacements without reconfiguring wiring diagrams. It’s also a solid choice for ongoing maintenance planning in facilities with Siemens panelboards and load centers, helping engineers and electricians stock the exact device needed for quick, reliable protection during routine service windows.

Why choose AmpState for this Siemens breaker

AmpState sources and ships genuine Siemens BQ3B100 units to support timely project timelines. If you’re unsure about compatibility or want to confirm fit for your specific panel or distribution setup, send us a message and we’ll help verify the correct part before you order.