Commander QBH220 - 20 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Meet the Commander QBH220—a 20A, 240V, 2-pole bolt-on molded case circuit breaker crafted for dependable branch-circuit protection in panelboards and loadcenters. This unit is purpose-built for residential, commercial, and light industrial applications where reliability and precise protection matter most.

The QBH220 stands out through thoughtful design and proven performance. It combines a secure bolt-on mounting with a rigid bus connection to resist vibration and maintain consistent electrical contact. Its thermal-magnetic trip unit delivers stable, repeatable protection: the thermal element handles long-term overcurrent trends, while the magnetic element responds instantly to high-current faults, helping prevent damage to wiring and connected equipment. And because it’s a 2-pole breaker, both live conductors trip together, ensuring safer, more reliable disconnection in all fault conditions.

Why this matters for your distribution system

• Secure bolt-on mounting provides a rigid, vibration-resistant connection to the bus, minimizing loose connections that can lead to overheating or nuisance trips.
• Thermal-magnetic protection balances long-term circuit health with fast fault response, helping protect wiring, devices, and occupants.
• 2-pole operation ensures simultaneous disconnection of both hot legs, improving safety for 240V circuits and equipment.
• 25+ year compatibility with matching OEM loadcenters and panelboards streamlines replacement and service in existing enclosures.
• Versatile fit ideal for residential panel upgrades, commercial distribution panels, and light industrial installations where dependable overcurrent and short-circuit protection is required.

Technical snapshot

• Manufacturer: Commander
• Part Number: QBH220
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20A
• Voltage Rating: 240V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical use cases and installation notes

Replace aging or failed breakers in existing panelboards or loadcenters that require a 20A, 240V, 2-pole bolt-on solution. Suitable for circuits feeding lighting, receptacles, small appliances, and 240V equipment within homes, small offices, retail spaces, and light manufacturing settings.

• Ideal when you need a straightforward swap for a like-for-like 2-pole bolt-on breaker in OEM panels.
• Use in new installations where a robust, vibration-resistant connection is essential due to equipment layout or environmental conditions.
• Follow standard electrical best practices for panel work, including proper torque on mounting hardware and verifying trip characteristics align with protective coordination goals.

With the Commander QBH220, you’re choosing a trusted, purpose-built solution for reliable electrical protection. It’s a practical, enduring choice for ensuring safety, compliance, and continuity in your distribution system, backed by performance that aligns with the expectations of professional installers and building operators alike.