Eaton KD3250C - 250 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Eaton KD3250C is a 250 A, 600 V, 3-pole molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Its compact molded case design maximizes panel space, while the thermal-magnetic trip unit provides stable, repeatable protection that responds to both overloads and short circuits.

Key advantages

• Space-efficient design: A compact molded case footprint helps you fit more protection in a tighter panel, improving overall layout and heat management.
• Three-pole configuration: Ideal for three-phase distribution, making it suitable for commercial and light industrial applications as well as residential setups with 3-phase service needs.
• 250 A current rating: Supports sizable branch circuits and motor loads without frequent nuisance trips, delivering reliable protection for demanding applications.
• 600 V voltage rating: Built to handle higher-voltage environments, expanding its compatibility beyond basic residential panels into more robust commercial use.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection—thermal responds to prolonged overloads, while magnetic reacts quickly to short circuits, reducing equipment risk.
• OEM compatibility: Designed for use with matching Eaton OEM loadcenters and panelboards, ensuring seamless replacement and consistent performance.
• Versatile applications: Suitable for residential, commercial, and light industrial settings, making it a flexible choice for fleets of panels or multi-site installations.

Performance and protection you can rely on

The KD3250C provides dependable branch circuit protection by interrupting fault currents before insulation damage or equipment failure can occur. The thermal-magnetic trip mechanism gives you predictable protection characteristics, helping to coordinate with other protective devices in the same panel and minimize unintended outages. With a 3-pole design, it supports balanced, three-phase loads, reducing the risk of phase-to-ground faults and improving overall system reliability.

Ideal use cases

• New installations in residential-sub panels or small commercial panels requiring 3-pole protection for three-phase circuits.
• Replacement in Eaton/loadcenter-compatible panelboards where a 250 A, 3-pole device is specified.
• Protection for circuits feeding motors, conveyors, and other demanding equipment in light industrial environments.

Specifications at a glance

• Manufacturer: Eaton
• Part Number: KD3250C
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 250 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection in panelboards and loadcenters

Practical considerations and best practices

To ensure optimal performance, pair the KD3250C with compatible Eaton panelboards and OEM loadcenters. Verify that the panel’s rating and the planned load align with a 250 A, 600 V, 3-pole device. When replacing an existing breaker, choosing the same part number helps maintain listing approvals and predictable trip characteristics across the system. For layout stability, reserve adequate clearance around the breaker to support heat dissipation and ease future maintenance.

Why choose the KD3250C?

Because it’s engineered for dependable protection in real-world electrical environments, the KD3250C combines space-efficient design with robust trip performance and OEM compatibility. It’s a thoughtful, practical choice for safeguarding branch circuits in homes, offices, and light industrial spaces where reliable protection and straightforward installation matter most.