Eaton | HKD3300X | Circuit Breaker | 300A | 3-Pole | 600V

Engineered by Eaton, the HKD3300X circuit breaker delivers dependable, three-pole protection for demanding industrial electrical systems. With a 300A rating and a 600V maximum, this device is built to safeguard three-phase feeders and critical loads without compromising performance or safety.

Designed for maintenance, retrofit, and replacement projects where exact specifications matter, the HKD3300X ensures seamless compatibility with existing Eaton equipment. The part number HKD3300X is your best reference for assessing fit and ratings, helping you avoid procurement mismatches and delays during installation.

Why the HKD3300X stands out for three-phase protection

• Three-pole design for balanced protection: Ideal for three-phase circuits, preserving power quality and preventing phase imbalances that can stress motors and drives.
• High-current capability: 300A maximum continuous current supports heavy-load feeders and critical loads while maintaining reliable protection.
• 600V voltage rating: Suited for a wide range of industrial distribution environments, providing versatile, future-proof protection.
• OEM-identical reference: Rely on the HKD3300X part number to ensure compatibility with existing Eaton panel infrastructure and documentation.
• Clear procurement guidance: Always verify fit and ratings before ordering; the part number is the clearest compatibility reference to avoid mismatches.

Use cases and scenarios

• Retrofit and upgrade projects: Replace aging breakers in three-phase Eaton-based panels to restore safety margins and comply with current codes.
• Routine maintenance: Keep on hand for reliable replacements when a breaker trips or reaches end-of-life in a controlled, predictable way.
• New installations requiring precise 3-Pole, 600V protection: Ensure quick, compatible interchanges with existing Eaton gear and documentation.

Practical tips for installers and engineers

• Before ordering, confirm fit by cross-referencing the panel label and the project’s electrical design with the HKD3300X specifications.
• Reference the HKD3300X part number in all procurement and maintenance logs to streamline sourcing and future service needs.
• Document the exact configuration (3-Pole, 600V, 300A) to simplify future replacements and panel updates.

In summary, the Eaton HKD3300X is a purpose-built solution for professionals who require dependable three-phase protection that integrates seamlessly with Eaton ecosystems. If your panel or service plan specifies 300A, 3-Pole, 600V protection and you need a precise part match, this breaker delivers straightforward installation, reliable protection, and long-term serviceability.