Commander QBH40 - 40 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Commander QBH40 — a 40 A, 120 V, 1-pole bolt-on molded case circuit breaker engineered for dependable branch circuit protection in panelboards and loadcenters. Designed to keep electrical systems safe and reliable, this unit combines robust mounting with precise protection to handle everyday residential, commercial, and light industrial needs.

• Secure bolt-on mounting for a rigid, vibration-resistant bus connection that stays tight over time, reducing connection wear and maintaining consistent performance in demanding environments.
• Thermal-magnetic trip unit delivers stable, repeatable protection by responding to gradual overloads with the thermal element and delivering fast magnetic trips for short circuits, helping minimize nuisance trips while guarding downstream circuitry.
• OEM-friendly compatibility designed to work with matching Commander loadcenters and panelboards, ensuring seamless integration within established electrical systems.
• Versatile application suited for residential, commercial, and light industrial installations—protecting 120 V branch circuits that power lighting, receptacles, and dedicated equipment.
• 1-pole, 40 A, 120 V configuration provides targeted protection for single hot-wire circuits in a compact, molded-case format, ideal where space and reliability matter.
• Durable molded-case design built to endure routine panelboard maintenance and field service, maintaining performance under common electrical stresses.

Why choose the Commander QBH40

If your panelboard or loadcenter calls for a bolt-on, 1-pole device with dependable branch-circuit protection, the QBH40 delivers. The combination of secure mounting, reliable thermo-magnetic trip, and OEM compatibility translates into fewer install hassles and more consistent protection across a wide range of applications. It’s the practical choice when you need a robust, service-friendly solution for 40 A circuits at 120 V.

Technical specifications at a glance

• Manufacturer: Commander
• Part number: QBH40
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 40 A
• Voltage rating: 120 V
• Number of poles: 1
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Designed for installers and electrical professionals seeking a dependable, easy-to-integrate solution, the Commander QBH40 helps you protect circuits with precision while maintaining compatibility across Commander’s OEM panelboard ecosystem.