Siemens BQ3B080H - 80 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Siemens BQ3B080H is a robust three-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit protection in panelboards and load centers. With an 80 A rating at 240 V, this unit is built to safely manage the demands of 3‑phase distribution in residential, commercial, and light industrial settings.

• Secure bolt-on mounting: Provides a rigid, vibration‑resistant bus connection that remains tight through regular equipment operation, reducing connection fatigue and ensuring consistent protection.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection by combining thermal overload sensing with instantaneous magnetic trip for short circuits, helping prevent equipment damage and nuisance trips.
• 3-pole configuration: Ideal for three-phase systems, ensuring balanced protection across all phases and simplifying integration in modern panelboards and load centers.
• OEM compatibility: Designed to pair with matching Siemens OEM load centers and panelboards for a seamless, reliable upgrade or replacement solution.
• Versatile application: Suitable for residential, commercial, and light industrial applications where steady overcurrent and short-circuit protection is essential.

Why this matters for your electrical protection strategy

In environments where reliability matters, the BQ3B080H’s bolt-on design minimizes connection loosening from vibration, temperature changes, or routine maintenance. The thermal-magnetic trip curve provides fast, predictable responses to short circuits while avoiding unnecessary trips during brief overloads, helping you maintain continuous service for critical loads.

Ideal use cases

• Upgrading or replacing aging breakers in Siemens panelboards and load centers.
• Protecting multi‑branch circuits in commercial spaces such as small offices, retail, and warehouses.
• Installing in light industrial panels where stable, three‑phase protection is required.
• Designing new 3‑phase electrical layouts that demand dependable, code‑compliant overcurrent protection.

Technical snapshot

• Manufacturer: Siemens
• Part Number: BQ3B080H
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 80 A
• Voltage Rating: 240 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

For a dependable, performance-driven protection solution, the Siemens BQ3B080H offers precise trip behavior, solid mechanical mounting, and seamless compatibility with Siemens panel ecosystems. If you’re designing or maintaining a three‑phase panel, this bolt-on breaker delivers the controlled protection you need with the reliability you can count on.