Siemens BQ3B050H - 50 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens BQ3B050H—a 50A, 240V, 3-Pole Bolt-On Molded Case Circuit Breaker designed to protect branch circuits with precision in panelboards and loadcenters. Available from AmpState, this breaker blends rugged reliability with straightforward installation for demanding electrical environments.

• Secure bolt-on mounting delivers a rigid, vibration-resistant bus connection, reducing loose connections and movement that can affect protection performance.
• Thermal-magnetic trip unit provides stable, repeatable protection by responding to both overload and short-circuit conditions, helping prevent nuisance trips while safeguarding equipment.
• OEM-compatible design is engineered to work with matching Siemens loadcenters and panelboards, ensuring a clean fit, predictable trip characteristics, and streamlined replacement in existing systems.
• Versatile application suited for residential, commercial, and light industrial installations where reliable branch circuit protection is essential.

Practical use scenarios illustrate its value: upgrading a service panel to support higher-demand HVAC or lighting circuits, substituting a failing breaker in a Siemens-based panelboard, or expanding a commercial distribution board where robust protection and quick reset are priorities. The 3-pole configuration provides coordinated protection across multiple phases, enhancing safety and system reliability in multi-branch layouts.

Technical snapshot

• Manufacturer: Siemens
• Part Number: BQ3B050H
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 50 A
• Voltage rating: 240 V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Choosing the BQ3B050H means committing to a proven protection solution that aligns with Siemens’ OEM ecosystem, simplifies maintenance, and supports long-term reliability in your electrical distribution. Whether you’re an electrician, facility manager, or DIY installer, this bolt-on breaker delivers clear performance benefits and peace of mind in a compact, purpose-built package.