Eaton EHD3040L - 40 A, 480 V, 3-Pole Circuit Breaker | AmpState

The Eaton EHD3040L is a 40A, 480V, 3-pole molded case circuit breaker engineered to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for compact installations and consistent performance, it protects electrical infrastructure in a wide range of settings—from residential panels to commercial and light industrial distributions.

• Compact molded case design enables efficient use of panel space, making it easier to fit into crowded electrical enclosures and simplify retrofits.
• Thermal-magnetic trip unit provides stable, repeatable protection by combining overload sensing with instantaneous short-circuit response, reducing nuisance trips and helping protect wiring and equipment.
• OEM compatibility is designed to work with matching Eaton OEM load centers and panelboards, ensuring consistent trip characteristics and reliable performance when replacing or upgrading protection devices.
• Versatile application suitable for residential, commercial, and light industrial electrical systems, particularly where 3-phase 480V distribution is utilized.

Technical details at a glance

• Manufacturer: Eaton
• Part Number: EHD3040L
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 40A
• Voltage Rating: 480V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Why this matters: in three-phase, 480V environments, reliable protection prevents cascading faults and minimizes downtime. The EHD3040L’s combination of a compact form factor and a robust thermal-magnetic trip mechanism helps ensure predictable performance under normal operation and during fault conditions, safeguarding both cabling and connected equipment.

Ideal use cases

• Protecting 3-phase branch circuits in commercial load centers and industrial panels where space is limited.
• Replacement or upgrade within Eaton-compatible panelboards to maintain uniform protection characteristics.
• New installations in light industrial facilities that run 480V distribution and require dependable trip behavior for critical equipment.

If you’re selecting a protective device for a 480V, 3-pole distribution system, the Eaton EHD3040L delivers precise protection without sacrificing panel space or compatibility with OEM components. It’s a purpose-built solution for reliable, code-compliant circuit protection that you can count on in demanding electrical environments.