Eaton LGH3400FAG - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Eaton LGH3400FAG is engineered to deliver dependable protection for branch circuits in panelboards and loadcenters, combining high current capability with compact, space-efficient design. With a 400A rating and a 600V operating envelope, this 3-pole molded case circuit breaker is built to handle demanding residential, commercial, and light industrial applications with confidence.

Key features that matter in real-world panels

• Compact molded case design maximizes usable panel space, giving you more room for wiring and future upgrades without compromising protection.
• Thermal-magnetic trip unit provides stable, repeatable protection against both overload and short-circuit events, reducing nuisance trips and improving reliability over time.
• 3-pole configuration delivers coordinated three-phase protection where required, ensuring balanced interrupting capacity and safer operation in multi-wire systems.
• OEM compatibility designed to pair with matching Eaton OEM load centers and panelboards, simplifying selection and installation while maintaining performance parity.
• Versatile application scope ideal for residential service upgrades, commercial panels, and light industrial distributions that demand robust overcurrent protection.

Technical snapshot

• Manufacturer: Eaton
• Part number: LGH3400FAG
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 400A
• Voltage rating: 600V
• Number of poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Who benefits from the Eaton LGH3400FAG

• Facilities upgrading to higher-capacity protection where space is at a premium
• Electrical contractors seeking reliable, manufacturer-matched breakers for Eaton panelboards
• Maintenance teams needing consistent, repeatable trip characteristics to minimize downtime
• Builders and installers who want a unified protection solution across residential, commercial, and light industrial projects

Why this breaker makes a practical difference

Beyond raw specs, the LGH3400FAG delivers tangible benefits in the field. The combination of a compact form and a thermal-magnetic trip unit means you get precise protection without sacrificing panel layout. Its three-pole design supports coordinated protection in three-phase systems, reducing the risk of uneven loading and potential damage downstream. Compatibility with Eaton’s OEM load centers and panelboards simplifies stocking and installation, helping projects stay on schedule and within budget.

Practical usage and installation notes

• Best suited for panels where space optimization is critical while delivering robust protection for high-current branch circuits.
• Ensure replacement or backup breakers are matched to the OEM panel’s specifications to maintain protection coordination and warranty coverage.
• Handle and install according to standard electrical safety practices; verify that the panel’s rating and labeling align with the 400A/600V, 3-pole configuration.
• Consider this breaker for scenarios requiring reliable, repeatable trip behavior in environments with varying load profiles.

Choose the Eaton LGH3400FAG when you need a proven, high-capacity, space-conscious solution that pairs seamlessly with compatible Eaton panelboards and loadcenters while delivering dependable branch circuit protection for a wide range of commercial, residential, and light industrial applications.