Eaton KDB3250Y - 250 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Eaton KDB3250Y is a 250 A, 600 V, 3-pole molded-case circuit breaker designed to guard branch circuits in panelboards and load centers. Built for reliability in residential, commercial, and light-industrial settings, this device delivers decisive protection without compromising space or performance. When you need a drop-in replacement that fits Eaton and OEM panels alike, the KDB3250Y stands out for its balance of power, speed, and compactness.

Key benefits

• 3-Pole, 250 A, 600 V capability: Provides robust three-phase protection for larger feeders and equipment, with a voltage rating that supports common commercial and light-industrial circuits.
• Space-efficient molded-case design: A compact form factor that frees panel space, making it easier to fit in tight panelboards and load centers without sacrificing protection.
• Thermal-magnetic trip unit: Delivers stable overload protection plus fast short-circuit interruption, reducing nuisance trips and protecting sensitive equipment during fault events.
• OEM panel compatibility: Designed to be a seamless match with matching OEM load centers and panelboards, simplifying installation and maintenance, and ensuring reliable coordination with existing protection schemes.
• Versatile for multiple settings: Ideal for residential, commercial, and light-industrial applications where dependable, long-lasting protection is essential.

Technical specifications

• Manufacturer: Eaton
• Part number: KDB3250Y
• 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

Ideal use cases

• Panelboards and load centers in commercial spaces with three-phase distribution
• Residential or light-industrial installations that require robust feeder protection
• Replacement or retrofit in Eaton or OEM panels where space and performance matter

Why this model stands apart

The KDB3250Y emphasizes a compact footprint without sacrificing interrupting capability, enabling precise protection across a range of panel layouts. Its thermal-magnetic trip unit delivers predictable trip curves, helping you manage inrush and fault conditions common in commercial equipment. And because it’s designed to slot into matching OEM panels, you get a smoother, more reliable replacement path than generic substitutes.

Tips for installation and use

• Verify your panelboard is compatible with KDB-series breakers and supports a 3-pole, 250 A device rated for 600 V.
• Ensure proper wiring and torque values follow the panelboard manufacturer’s instructions; installation should be performed by a licensed electrician.
• Keep a spare KDB3250Y on hand for planned maintenance or panel upgrades to minimize downtime.