Eaton KD3125 - 125 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Eaton KD3125 is a dependable 125 A, 600 V, 3-pole molded case circuit breaker designed to protect your panelboards and loadcenters with precision and resilience. Built for today’s mixed electrical environments, this breaker delivers consistent overcurrent and short-circuit protection where it matters most—in residential, commercial, and light industrial applications.

Why this breaker stands out

• Compact molded case design maximizes panel space, letting you fit more circuits without sacrificing protection.
• Thermal-magnetic trip unit provides stable, repeatable protection across varying loads and ambient conditions—reducing nuisance trips while staying responsive in fault conditions.
• OEM compatibility is engineered for seamless integration with matching Eaton loadcenters and panelboards, ensuring proper fit, coordinated protection, and easier replacements.
• Versatile performance suits residential service panels, commercial distribution boards, and light industrial feeder circuits, offering a reliable solution for a range of projects.

Technical snapshot you can rely on

• Manufacturer: Eaton
• Part Number: KD3125
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 125 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Practical use cases to consider

• Upgrade an aging or undersized breaker in a residential or light commercial panel to safely support a 3-phase equipment load up to 125 A.
• Feed a subpanel in a workshop or small warehouse where space efficiency and reliable protection are critical.
• Coordinate protection for 3‑phase motors or equipment in panels that require a compatible, robust molded case breaker.

With the Eaton KD3125, you’re choosing a solution designed for predictable performance, easy cross-compatibility with Eaton loadcenters, and the lasting reliability needed for daily electrical operations. If you’re configuring or refreshing a panel, this 3-pole, 125 A, 600 V MCCB delivers targeted protection where it counts—keeping circuits safe, panels organized, and systems up and running.