Eaton HKD3300C - 300 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Eaton HKD3300C is a 300 A, 600 V, 3-pole molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Its compact form helps you maximize panel space without compromising protection, making it a practical choice for structured electrical distribution in busy installations.

• Compact molded case design — efficient use of panel space, helping you fit more protection where it’s needed.
• Thermal-magnetic trip unit — provides stable, repeatable protection by responding to both prolonged overloads and sudden short circuits.
• 3-pole configuration — ideal for three-phase panelboards and load centers, enabling coordinated protection across all phases.
• OEM-compatible — engineered to drop into matching Eaton OEM load centers and panelboards for straightforward replacement or upgrades.
• Rugged ratings — rated for 300 A at up to 600 V, suitable for a range of residential, commercial, and light industrial applications.

Ideal use cases

• Main branch circuit protection in residential or small commercial panelboards where space is at a premium.
• Protection for three-phase motor circuits, HVAC feeders, and lighting systems in light industrial environments.
• Upgrades or replacements in Eaton-compatible panel systems to maintain a cohesive protection scheme.

Technical specifications at a glance

• Manufacturer: Eaton
• Part Number: HKD3300C
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 300 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Choosing the HKD3300C means aligning with Eaton’s proven reliability and ensuring seamless integration with OEM panel systems for a cohesive electrical protection strategy. If you need compact, dependable three-pole protection that fits neatly into Eaton panel centers and delivers consistent performance across residential, commercial, and light industrial applications, this breaker is a practical, well-supported option.