Eaton ED3125 - 125 A, 240 V, 3-Pole Circuit Breaker | AmpState

The Eaton ED3125 is a 125A, 240V, 3-pole molded case circuit breaker engineered to deliver reliable branch circuit protection for panelboards and load centers. Built to perform where it truly matters, this device helps safeguard wiring and connected equipment from overcurrent and short-circuit events.

Key design advantages you’ll notice in installations:

• Compact molded case design maximizes panel space, making it easier to fit multiple protections within the same enclosure and keep wiring organized.
• Thermal-magnetic trip unit provides stable, repeatable protection by combining thermal overload sensing with magnetic short-circuit tripping, reducing nuisance trips while responding quickly to faults.
• OEM-compatible installation is designed to work seamlessly with matching Eaton load centers and panelboards, ensuring a dependable fit and straightforward replacement or retrofit.
• Versatile in application suitable for residential, commercial, and light industrial environments where robust 125A protection on 240V circuits is required.

Technical snapshot

• Manufacturer: Eaton
• Part Number: ED3125
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 125A
• Voltage Rating: 240V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Ideal for electricians and facility managers upgrading or maintaining electrical panels, the ED3125 shines in three-phase distributions where reliable protection is essential. Use it to:

• Protect branch circuits feeding equipment in three-phase panelboards and load centers
• Replace aging or undersized breakers to restore fast fault response and dependable operation
• Integrate with compatible Eaton OEM panels to maintain consistent protection schemes and wiring compatibility

By choosing the ED3125, you’re selecting a purpose-built solution that aligns with standard electrical practices for 3-pole, 125A protection at 240V. Its combination of space-efficient design, precise thermal-magnetic protection, and OEM-friendly compatibility helps streamline panel assembly, improve reliability, and support safer, longer-lasting electrical distributions.