Eaton HKD3300Y 300A 600V 3-Pole Circuit Breaker

Engineered for dependable protection in demanding electrical panels, the Eaton HKD3300Y is a 300 A, 600 V, 3-pole bolt-on molded case circuit breaker designed to safeguard branch circuits and equipment from overcurrent and short circuits.

Key advantages that set this breaker apart:

• Secure bolt-on mounting: provides a rigid, vibration-resistant connection to the panel bus, reducing arcing risk and maintaining a stable electrical path even in environments with movement or vibration.
• Thermal-magnetic trip unit: combines thermal and magnetic sensing for reliable, repeatable protection against overloads and short circuits, with fast response to high-energy faults.
• OEM-compatible design: engineered to work with matching OEM loadcenters and panelboards, ensuring seamless integration in established electrical systems.
• Three-pole configuration: ideal for three‑phase power distribution, while supporting single-phase accessories when used in appropriate panelboard arrangements.
• Industrial-leaning resilience for multiple sectors: well-suited for residential, commercial, and light industrial applications where robust branch-circuit protection is essential.

Spec at a glance

• Manufacturer: Eaton
• Part Number: HKD3300Y
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 300 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

The HKD3300Y is designed for real-world use: install it in new panelboards or retrofit existing systems where secure, high‑current protection is needed. Its bolt-on design simplifies mounting in compatible enclosures, while the 3‑pole configuration delivers reliable protection for three‑phase feeders and equipment bays. Whether you’re wiring a commercial service panel, a light industrial distribution center, or a large residential installation with heavy loads, this breaker helps you maintain system integrity and safety under fault conditions.

Choose Eaton HKD3300Y for a trusted, purpose-built solution that pairs with OEM panels to deliver consistent performance, long service life, and predictable protection. Ready to install with AmpState, your source for genuine Eaton circuit breakers.