Eaton FD3040L - 40 A, 600 V, 3-Pole Circuit Breaker | AmpState

Meet the Eaton FD3040L, a reliable 40A, 600V three-pole molded case circuit breaker built to protect your electrical system where it matters most. Designed for use in panelboards and loadcenters, this device delivers steady overcurrent and short-circuit protection across residential, commercial, and light industrial applications. With its compact footprint and robust trip mechanism, the FD3040L keeps your panels organized without compromising safety.

• Compact molded case design maximizes panel space and simplifies installation, giving you more room for essential protection without crowding the enclosure.
• Thermal-magnetic trip unit provides stable, repeatable protection by accurately responding to overloads and rapidly interrupting short circuits.
• Three-pole configuration ensures synchronized protection across all conductors in three-phase setups, enhancing fault handling and system safety.
• OEM panelboard compatibility designed to work with matching Eaton loadcenters and other OEM panels, making replacements and upgrades straightforward.
• Versatile application ideal for residential, commercial, and light industrial environments where dependable branch circuit protection is essential.

Technical snapshot

• Manufacturer: Eaton
• Part Number: FD3040L
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 40A
• Voltage Rating: 600V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Whether you’re upgrading an existing panel or equipping a new installation, the Eaton FD3040L delivers confident protection with minimal footprint. Its precise trip characteristics and durable construction make it a trusted choice for safeguarding electrical infrastructure in homes, small offices, retail spaces, and light manufacturing environments.