Eaton Cutler-Hammer QBH20 20A 1P 120V Circuit Breaker, Bolt-On | AmpState

Eaton Cutler-Hammer QBH20 is a dependable 20 A, 1‑Pole, 120 V circuit breaker designed for everyday electrical protection in panelboards, load centers, and electrical distribution systems. Built to meet the demands of busy electrical environments, this breaker helps keep circuits safe and houses protected during routine service and outages alike.

Perfect for retrofit work and maintenance planning, the QBH20 keeps your servicing strategy streamlined by using a consistent part number. Its bolt-on design delivers secure, durable mounting in compatible panels, making replacements quicker and downtime shorter—critical for facilities that require reliable protection without surprises.

Key specifications at a glance

• Amperage: 20 A
• Poles: 1 Pole
• Voltage: 120 V
• Mounting: Bolt-On
• Manufacturer: Eaton Cutler-Hammer
• Part Number: QBH20

Why this QBH20 is a smart choice for your projects

If you’re updating or maintaining panels where a standard, reliable breaker is required, QBH20 minimizes compatibility concerns. It’s specifically suited for panelboards, load centers, and electrical distribution setups that operate at 120 V and need a single-pole solution. The bolt-on format simplifies replacement in legacy installations, reducing installation time and ensuring robust electrical protection with a trusted brand.

Who should consider this part

Electricians handling retrofits, facility maintenance teams planning scheduled panel servicing, and contractors managing consistent part inventories will value the QBH20 for its reliability and the ease of confirming compatibility when the exact part number must stay constant.

Need help confirming compatibility?

AmpState stocks the QBH20 and can assist in verifying fit for your specific panel model. If you’re unsure about compatibility, send us a message and we’ll help confirm the right fit to keep your electrical protection uninterrupted.