Eaton KDC3400X - 400 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Eaton KDC3400X is a 400A, 600V, 3-pole bolt-on molded case circuit breaker designed to protect panelboards and load centers from overcurrent and short-circuit events. Built for reliability in residential, commercial, and light industrial environments, this unit delivers durable protection with precise, repeatable performance.

• Secure bolt-on mounting: provides a rigid, vibration-resistant bus connection that stays dependable in equipment with regular movement or vibration.
• Thermal-magnetic trip unit: combines thermal overload protection with magnetic short-circuit response for fast, consistent trips and improved coordination with downstream devices.
• 3-pole, 400A, 600V rating: ideal for three-phase distribution and high-current branch circuits common in larger panel installations.
• Molded-case construction: compact, durable housing designed for long-term service and straightforward field installation.
• OEM compatibility: engineered to work with matching Eaton OEM load centers and panelboards, simplifying replacements and reducing setup time.
• Versatile protection: provides reliable branch circuit overcurrent and short-circuit protection across a range of residential, commercial, and light industrial applications.

Practical uses and scenarios

• New installations in three-phase panelboards where a robust 400A protection point is required.
• Retrofits or upgrades in commercial spaces that utilize Eaton OEM load centers, ensuring seamless integration.
• Long-term protection for critical circuits against overloads and short circuits in environments with variable temperatures or vibration.
• Applications where maintaining a rigid, secure connection is essential to minimize connection resistance and downtime.

Specifications at a glance

• Manufacturer: Eaton
• Part Number: KDC3400X
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 400 A
• Voltage rating: 600 V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Choose the Eaton KDC3400X for a high-current, three-phase protection solution that pairs OEM compatibility with durable, vibration-resistant construction. It’s a dependable choice for electricians and facility managers seeking consistent protection without compromise.