Commander QBH30 30 Amp 1-Pole Bolt-On Circuit Breaker 120 Volt

Meet the Commander QBH30 — a dependable 30 A, 120 V, 1-pole bolt-on molded case circuit breaker designed to safeguard your panelboards and loadcenters. Built for steady, repeatable protection, it’s the smart choice for residential, commercial, and light industrial applications where reliable branch-circuit overcurrent and short-circuit protection matters most.

• Secure bolt-on mounting: provides a rigid, vibration-resistant bus connection that stays tight through normal operation and equipment monitoring in busy electrical rooms.
• Thermal-magnetic trip unit: combines thermal overload sensing with a magnetic trip for fast, precise responses to faults, minimizing nuisance trips while protecting wiring and devices.
• OEM-compatible design: engineered to pair with matching Commander OEM loadcenters and panelboards for a seamless fit, consistent trip characteristics, and straightforward replacement.
• Versatile, one-pole protection: ideal for dedicated branch circuits such as lighting feeds, outlets, and small machinery in residential, commercial, and light-industrial environments.

Why this matters

The QBH30 delivers dependable, predictable protection when it’s needed most. Its robust bolt-on mounting reduces connection wear in vibration-prone areas, while the thermal-magnetic trip unit provides reliable separation between normal operation and fault conditions. The result is a safer electrical system with minimized downtime and easier serviceability.

Use cases and scenarios

• Residential subpanels powering high-draw appliances or HVAC equipment on a dedicated 30 A circuit.
• Commercial spaces requiring durable protection for lighting and receptacle circuits in busy, high-traffic environments.
• Light industrial setups where rugged, stable protection is essential in areas subject to equipment vibration.

Technical snapshot

• Manufacturer: Commander
• Part number: QBH30
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 30 A
• Voltage rating: 120 V
• Number of poles: 1
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection