Eaton KD3300C - 300 A, 600 V, 3-Pole Circuit Breaker | AmpState

Meet the Eaton KD3300C, a robust 300A, 600V, 3-pole molded case circuit breaker designed to shield your electrical system from overcurrent and short-circuit events. Built for dependable protection in panelboards and loadcenters, it blends a compact form with precise trip performance to keep your power running smoothly.

Key features that matter in real-world setups

• Compact molded case design frees panel space and simplifies installation in tight electrical panels.
• Thermal-magnetic trip unit delivers stable, repeatable protection against overloads and short circuits, reducing nuisance trips and downtime.
• 3-pole configuration supports standard three-phase systems, enabling coordinated protection across all phases.
• 600V rating and 300A rating provide reliable main and branch-circuit protection for demanding loads in commercial and light industrial settings.
• OEM compatibility designed to pair with matching OEM loadcenters and panelboards for a seamless, reliable fit.

Why this breaker matters for your project

Engineered for residential, commercial, and light industrial applications, the KD3300C safeguards wiring, components, and downstream devices from damage due to overcurrent or short circuits. Its compact footprint helps maximize usable panel space while maintaining ease of access for maintenance and testing.

Technical snapshot

• Manufacturer: Eaton
• Part Number: KD3300C
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 300A
• Voltage Rating: 600V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Use cases and installation scenarios

Ideal for panelboards and loadcenters in commercial environments with three-phase distribution, or larger residential setups requiring reliable protection for heavy loads. Suitable for spaces where panel real estate is precious but safety and reliability cannot be compromised—from service panels in offices to electrical closets in multi-unit buildings and light industrial equipment rooms.

Practical tips

• Plan around your current-carrying needs: a 300A breaker protects feeders and main circuits; ensure conductors, bus bars, and downstream devices are sized appropriately.
• Pair with the matching OEM loadcenter for optimal fit and coordinated trip performance.
• Periodically inspect the panel for signs of wear, and verify termination torque to maintain reliable connections.