Siemens BQ3B030 30A 3P 240V Circuit Breaker, Bolt-On | AmpState

The Siemens BQ3B030 is a reliable bolt-on circuit breaker designed for everyday electrical protection in panelboards, load centers, and distribution systems. Built to support retrofit work and maintenance planning, this 30 A, 3-pole, 240 V breaker helps you keep your existing installations consistent while delivering essential overcurrent protection.

• Amperage: 30 A
• Poles: 3
• Voltage: 240 V
• Mounting: Bolt-On for secure, rugged installations
• Manufacturer: Siemens
• Part Number: BQ3B030
• Type: Circuit Breaker
• Applications: Panelboards, load centers, electrical distribution, retrofit projects, and maintenance planning
• Availability: Offered by AmpState; support available to confirm fit and compatibility

Why this model stands out for professionals tackling 3‑phase electrical systems: the bolt-on design provides a solid, vibration‑resistant connection ideal for commercial and industrial environments where panels may endure movement or remodeling. The BQ3B030 keeps your spare parts aligned with the same part number across projects, simplifying stocking, ordering, and retrofits when you need a dependable replacement without reconfiguring panel architecture.

Use cases include upgrading or replacing breakers in existing Siemens-equipped panels, performing planned maintenance where downtime must be minimized, and coordinating retrofit installs where panel footprints must accept bolt-on protection without altering bus configurations.

Choosing this breaker helps you avoid uncertainty during maintenance cycles. If you’re unsure about compatibility with your specific panel or bus arrangement, you can message AmpState for confirmation—ensuring a precise fit before purchase.

Ideal for electricians, facilities managers, and maintenance teams who value quick swaps, consistent part numbers, and robust protection for three-phase circuits, the Siemens BQ3B030 is a practical, purpose-built solution for reliable electrical distribution.