Eaton QC3055H - 55 A, 240 V, 3-Pole Circuit Breaker | AmpState

Introducing the Eaton QC3055H — a 55A, 240V, 3-pole molded case circuit breaker built to safeguard your panelboards and loadcenters with dependable branch circuit overcurrent and short-circuit protection. Engineered for real-world electrical needs, this breaker keeps your distribution system running smoothly where reliability matters most.

• Compact molded case design maximizes panel space, letting you fit more circuits without crowding the enclosure.
• Thermal-magnetic trip unit delivers stable, repeatable protection against overloads and instantaneous short circuits, reducing nuisance trips and enhancing system reliability.
• OEM compatibility designed to pair with matching Eaton OEM loadcenters and panelboards, ensuring straightforward replacement and consistent performance.
• Versatile application suitable for residential, commercial, and light industrial electrical distributions where 3-pole protection at 240V is required.

Technical snapshot

• Manufacturer: Eaton
• Part Number: QC3055H
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 55A
• Voltage Rating: 240V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Why this 3-pole breaker stands out: when you’re upgrading or replacing a panel, the QC3055H provides a factory-calibrated trip profile that aligns with Eaton’s panel configurations, helping you maintain consistent protection across all circuits. The compact form factor frees up space for future expansions, while the thermal-magnetic mechanism ensures precise tripping characteristics under varying loads and fault conditions.

Ideal use scenarios include feeding 3-phase or multi-branch circuits in commercial subpanels, safeguarding residential subpanels with 240V feeders, and supporting light-industrial distribution where robust protection and panel efficiency are priorities. If you’re aligning with OEM panels or performing in-kind replacements, the QC3055H offers a reliable, tested solution that keeps equipment safe and running.

Practical tips for installation and use: verify panel compatibility with Eaton OEM loadcenters, confirm the 240V supply and 3-pole configuration matches your circuit requirements, and ensure the current rating (55A) aligns with the protected loads to prevent nuisance trips while maintaining safe protection levels.

With the Eaton QC3055H, you’re investing in precise protection, panel efficiency, and peace of mind across residential, commercial, and light industrial electrical setups.