Eaton KD3300X - 300 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Eaton KD3300X delivers robust, three‑phase protection for demanding electrical systems. This 3‑pole bolt‑on molded case circuit breaker is rated for 300 A at 600 V, making it a dependable choice for heavy circuits in panelboards and load centers. Built to endure vibration and help prevent loose connections, it’s a smart, long‑term solution for residential upgrades, commercial installs, and light industrial applications.

• Secure bolt‑on mounting provides a rigid bus connection that resists vibration and movement, reducing wear and maintaining reliable current paths in demanding environments.
• Thermal‑magnetic trip unit delivers stable, repeatable protection by responding to both overloads and short circuits, helping to prevent nuisance trips and equipment damage.
• OEM compatibility is designed to work with matching Eaton load centers and panelboards, ensuring straightforward replacement and consistent performance across systems.
• Versatile application ideal for residential panel upgrades, commercial electrical rooms, and light industrial distribution where high‑current protection is essential.

Why the KD3300X stands out

Unlike smaller or plug‑in breakers, the KD3300X’s bolt‑on design anchors firmly to the panel, which matters when panels face vibration, temperature shifts, or heavy loads. The thermal‑magnetic trip unit provides precise coordination with other protection devices in the same panel, helping you maintain system integrity under varying electrical conditions.

Technical snapshot

• 300 A
• 600 V
• 3
• Bolt‑on
• Thermal‑magnetic molded case circuit breaker
• Branch circuit overcurrent and short‑circuit protection

Who should consider the KD3300X

Electrical professionals installing or upgrading panelboards in homes, offices, retail spaces, or light manufacturing facilities will find the KD3300X to be a reliable, future‑proof choice. It pairs well with existing Eaton systems, ensuring consistent protection across generations of equipment and simplifying maintenance planning.

Practical guidance and care

Use the KD3300X where three‑phase protection is required and ensure panelboard compatibility with Eaton’s line of OEM components. For installation, follow the panel manufacturer’s guidelines and local electrical codes. Regularly inspect for secure mounting and clean, dry connections to maximize longevity and protection performance.

With the Eaton KD3300X, you gain a high‑current, three‑pole, bolt‑on solution that keeps your critical circuits safeguarded, your equipment protected, and your projects on track—from residential upgrades to light industrial distributions.