Siemens BQ3B015H - 15 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Siemens BQ3B015H is a 15A, 240V, 3-pole bolt-on molded case circuit breaker designed to protect panelboards and load centers from overcurrent and short circuits. Built for reliable performance in residential, commercial, and light-industrial environments, this unit delivers dependable protection where it matters most.

Its secure bolt-on mounting creates a rigid, vibration-resistant bus connection that stays tight in demanding electrical panels. The thermal-magnetic trip unit combines precise thermal overload protection with fast magnetic response for high-energy faults, delivering stable, repeatable protection you can trust through the life of the installation.

Designed to work with matching OEM load centers and panelboards, the BQ3B015H ensures a clean fit and consistent trip characteristics across Siemens and compatible systems. This makes it an ideal replacement or upgrade option when reliability and compatibility are paramount.

Key advantages

• Bolt-on mounting provides a secure, vibration-resistant bus connection for long-term reliability in crowded panels.
• Thermal-magnetic trip delivers stable overload protection with immediate magnetic response to short circuits.
• 3-pole, 240V design suited for three-phase circuits and equipment common in commercial and light-industrial settings.
• OEM compatibility ensures seamless integration with matching Siemens panelboards and load centers.
• Versatile application appropriate for residential, commercial, and light-industrial protection needs.

Ideal use scenarios

• Protection for branch circuits in new panel installations or panel retrofits in commercial buildings.
• Upgrading protection for light industrial equipment powered from 240V three-phase systems.
• Replacement of aging or inconsistent breakers within compatible Siemens OEM panelboards to restore reliable protection characteristics.
• Prefabricated electrical assemblies and service upgrades where a compact, bolt-on 3-pole solution is preferred.

Technical specifications

• Manufacturer: Siemens
• Part Number: BQ3B015H
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 15A
• Voltage Rating: 240V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection