Siemens BQ3B01500S01 - 15 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens BQ3B01500S01 — a purpose-built 15A, 240V, 3-pole bolt-on molded case circuit breaker designed to shield your panelboards and load centers from overcurrent and short-circuit events. Available from AmpState, this unit brings robust construction and precise protection to demanding electrical layouts.

Key benefits

• Secure bolt-on mounting: delivers a rigid, vibration-resistant bus connection that stays solid through normal operation and site movement.
• Thermal-magnetic trip unit: combines thermal overload sensing with magnetic short-circuit interruption for stable, repeatable protection and quick fault response.
• 3-pole, 240V configuration: ideal for 3-phase or multi-branch 240V circuits, enabling comprehensive protection for larger loads.
• 15A rating: appropriate for lighting runs, small motors, and general branch circuits without unnecessary trips.
• OEM compatibility: engineered to perfectly integrate with matching Siemens load centers and panelboards for seamless upgrades or replacements.
• Versatile across applications: suitable for residential, commercial, and light industrial environments that demand reliable circuit protection.

What problems does it solve?

The BQ3B01500S01 protects electrical systems from damaging overcurrents and short circuits. Its thermal-magnetic trip mechanism minimizes nuisance trips caused by normal temperature fluctuations while delivering fast, decisive fault interruption to safeguard wiring, devices, and downstream equipment.

Ideal use cases

• New installations in Siemens panelboards and load centers requiring a 3-pole 240V breaker.
• Replacement for aging or faulty 3-pole breakers in residential, commercial, or light industrial panels.
• Protection for dedicated 240V circuits such as HVAC equipment, pumps, and controlled machinery in small facilities.

Specifications

• Manufacturer: Siemens
• Part Number: BQ3B01500S01
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 15 A
• Voltage Rating: 240 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Compatibility and installation tips

For best results, pair the BQ3B01500S01 with matching Siemens OEM load centers and panelboards to ensure optimal fit and performance. When installing, follow the manufacturer’s bolt-on mounting guidelines and verify a secure bus connection to maintain resistance to vibration and reliable long-term operation.