Eaton KD3350Y - 350 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Eaton KD3350Y is a 350A, 600V, 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built to endure the demands of modern electrical systems, it combines rugged construction with precise protection, making it a trusted choice for installers and engineers.

Key features that enhance reliability

• Secure bolt-on mounting creates a rigid, vibration-resistant bus connection, reducing movement-related wear and ensuring consistent electrical contact in demanding environments.
• Thermal-magnetic trip unit provides stable, repeatable protection by accurately responding to both overcurrent and short-circuit conditions, minimizing nuisance trips while safeguarding downstream circuits.
• OEM-compatible design is engineered to work seamlessly with matching OEM load centers and panelboards, simplifying replacement and maintenance in established installations.
• Versatile application range suitable for residential, commercial, and light industrial settings, delivering reliable protection across a variety of system sizes and configurations.

Technical specifications at a glance

• Manufacturer: Eaton
• Part Number: KD3350Y
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 350A
• Voltage Rating: 600V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

• Panelboards and load centers in residential buildings where robust branch protection is required.
• Commercial electrical rooms and service panels needing reliable 3-pole protection for three-phase circuits.
• Light industrial applications where a secure, vibration-resistant connection and precise trip characteristics are critical.

Why this Eaton KD3350Y stands out

• Distinctive bolt-on design minimizes bus movement, enhancing long-term contact reliability in installations exposed to vibration or movement.
• Thermal-magnetic trip system delivers accurate coordination with other protective devices, helping to prevent cascading trips while maintaining fast response to faults.
• Proven compatibility with OEM panelboards and load centers reduces installation risk and simplifies ongoing maintenance in systems with existing Eaton or OEM equipment.
• High-current, high-voltage capability (350A, 600V) makes it suitable for a broad range of branch circuits, from feeders to motor-control related protection, without needing multiple device types.

Practical tips and considerations

• Ensure you pair this breaker with a matching OEM panelboard or load center for guaranteed fit and performance.
• Follow manufacturer installation guidelines for torque and mounting to preserve the integrity of the bolt-on connection and trip mechanism.
• Use this KD3350Y in circuits where three-phase protection is required and where panel installations benefit from a compact, molded-case form factor.

With the Eaton KD3350Y, you get a sturdy, dependable solution for protecting electrical distribution in a variety of settings. Its combination of secure mounting, precise thermal-magnetic protection, and OEM compatibility makes it a practical choice for engineers and electricians seeking reliable, compliant circuit protection.