Thomas & Betts | QB15 | Circuit Breaker | 15A | 1-Pole | 120V | Bolt-On

Introducing the Thomas & Betts QB15 Circuit Breaker — a precise, reliable 15A, 1-Pole, 120V bolt-on solution designed for maintenance, retrofit, and replacement projects where exact specifications matter. Built to meet the demands of modern electrical panels, this breaker delivers consistent protection with a straightforward install in compatible systems.

Key specifications

• Amperage: 15A
• Poles: 1-Pole
• Voltage: 120V
• Mounting: Bolt-On
• Part number: QB15

Compatibility and fit

Designed for panels that accept bolt-on, 1-pole breakers at 120V. Before ordering, confirm fit and ratings for your specific panel. The QB15 part number is the best reference for compatibility, ensuring you’re selecting the exact replacement needed for your electrical system.

Why the QB15 stands out

• Exact-match protection: 15-amp rating provides reliable circuit protection for dedicated loads without unnecessary trips.
• Secure bolt-on mounting: A robust connection that stays in place under typical panel vibration and load conditions.
• Trusted brand quality: Thomas & Betts engineering brings decades of experience in electrical distribution components.
• Efficient retrofitting: Ideal for service upgrades, panel maintenance, or replacements where the existing equipment calls for a 1-pole, bolt-on 120V design.

Installation and safety considerations

Electrical work should be performed by a licensed electrician or qualified professional. Always adhere to local electrical codes and the panel manufacturer’s installation instructions. Power must be shut off before any work, and the device should be installed in a manner consistent with the panel’s torque and mounting requirements. The QB15 is intended for compatible panels; using it in incompatible configurations can compromise safety and performance.

Ideal use cases

• Residential and light commercial panels requiring a 15A, 1-pole, 120V bolt-on breaker.
• Maintenance and replacement projects where the existing device is identified as QB15 by part number for accurate compatibility.
• Retrofits and panel upgrades that maintain standard 120V circuit protection with a reliable bolt-on design.