Eaton HKD3225Y 225 A 600 V 3-Pole Circuit Breaker

The Eaton HKD3225Y is a 225 A, 600 V, 3-pole bolt-on molded case circuit breaker engineered to deliver reliable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for heavy-duty performance, it keeps critical electrical feeds safe in demanding environments.

Why this breaker stands out

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, reducing looseness and electrical fade in panels exposed to movement or vibration.
• Thermal-magnetic trip unit delivers stable, repeatable protection across a wide temperature range and fault conditions, so you get predictable tripping behavior when it matters most.
• OEM-compatible design is intended to pair seamlessly with matching Eaton OEM load centers and panelboards, simplifying installation and ensuring consistent performance.
• Versatile, three-pole protection supports three-phase systems, delivering comprehensive protection for three-phase feeders and associated equipment.
• Ideal for multiple sectors—suitable for residential, commercial, and light industrial applications where reliable branch circuit protection and short-circuit interruption are critical.

Technical snapshot

• Manufacturer: Eaton
• Part number: HKD3225Y
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 225 A
• Voltage rating: 600 V
• Poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical use cases

• Residential and commercial panelboards where large-draw loads require solid protection for feeders and branch circuits.
• Light industrial distribution panels protecting motor starters, conveyors, and other three-phase equipment.
• Panel upgrades or replacements in existing Eaton OEM setups to maintain consistent protection characteristics.

For customers choosing AmpState, the HKD3225Y combines robust mechanical mounting with a proven thermal-magnetic protection strategy, delivering dependable performance where panel reliability and uptime matter. Installers will appreciate the straightforward bolt-on design, which promotes a secure connection in environments where vibration or movement is a factor, while facility managers benefit from predictable trip behavior and compatibility with Eaton’s panel ecosystems.

Bottom line: If you need a 225 A, 600 V, 3-pole bolt-on MCCB designed to deliver dependable branch circuit protection in panelboards and load centers, the Eaton HKD3225Y offers a purpose-built solution with OEM compatibility, durable construction, and a trip system that stays consistent across real-world conditions.