Siemens BQ3B03000S01 - 30 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens BQ3B03000S01— a 30A, 240V, 3-pole bolt-on molded case circuit breaker designed to provide reliable branch circuit protection in panelboards and load centers. From AmpState, this unit pairs Siemens engineering with rugged mounting and precise trip behavior to keep critical electrical systems safe and running.

• Bolt-on mounting provides a rigid, vibration-resistant bus connection that stays secure in demanding panels.
• Thermal-magnetic trip unit delivers stable, repeatable protection—responding to overload conditions and short circuits with dependable trip characteristics.
• Three-pole design suitable for three-phase circuits, ideal for commercial and light industrial applications, as well as certain large-residential setups.
• 30A, 240V rating protects branch circuits feeding motors, HVAC equipment, lighting, and other loads, while fitting standard Siemens OEM load centers and panelboards.
• OEM compatibility with matching Siemens panelboards ensures consistent performance and easier serviceability.

Why this matters: In environments where vibration, heat, and intermittent surges are common, a bolt-on breaker that maintains a solid connection and precise trip thresholds can reduce nuisance tripping and panel downtime. The 3-pole design simplifies protective coordination for three-phase equipment and helps maintain safe shutdown sequences during faults.

Use cases and installation scenarios

• Commercial HVAC drives and compressors where stable protection and quick isolation are critical.
• Lighting and power distribution in small to mid-size facilities that use three-phase panels.
• Industrial equipment feeders in light industrial settings relying on reliable overcurrent protection.
• Renovations and new installations that call for compatible OEM panelboards and a robust bolt-on solution.

Technical snapshot:

• Manufacturer: Siemens
• Part number: BQ3B03000S01
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 30A
• Voltage rating: 240V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal for electrical professionals who need dependable protection that aligns with Siemens OEM panels. When you choose the Siemens BQ3B03000S01, you’re selecting a component designed for longevity, precise protection, and straightforward maintenance in both new builds and retrofits. Add this 3-pole bolt-on breaker to your electrical inventory and experience secure mounting, consistent trip behavior, and compatibility with Siemens panel centers.