Eaton Cutler-Hammer DK3300V 300A 3P 240V Circuit Breaker | AmpState

Engineered by Eaton Cutler-Hammer, the DK3300V is a rugged circuit breaker built for everyday electrical work in panelboards, load centers, and distribution networks. With a 300 A rating across 3 poles at 240 V, it delivers dependable protection for feeders and main circuits in commercial and industrial environments. The 3P design is well-suited for three‑phase systems found in manufacturing, data centers, and large facilities where reliability matters most.

Why this DK3300V stands out

• Consistent part number for retrofit and maintenance: DK3300V keeps your inventory and maintenance logs straightforward, reducing delays when replacements are needed.
• Panel and distribution readiness: Designed for use in panelboards, load centers, and electrical distribution setups where robust 300 A protection at 240 V is required.
• Clear compatibility guidance: If you’re unsure about fit, AmpState can help confirm compatibility and ensure you get the right match for your setup.
• Reliable sourcing: Availability through AmpState helps minimize downtime during maintenance or retrofit windows.

Practical use cases

• Retrofit projects that rely on a consistent DK-series part number to simplify ordering and installation.
• Maintenance planning for facilities with three‑phase 240 V distribution, providing solid 300 A protection for feeders powering motors, HVAC equipment, and large loads.
• New installations in commercial settings where high-amperage protection is essential for safety and reliability.

At a glance

• Manufacturer: Eaton Cutler-Hammer
• Part Number: DK3300V
• Type: Circuit Breaker
• Amperage: 300 A
• Poles: 3
• Voltage: 240 V
• Availability: AmpState

Before you buy, consider your panel compatibility and upgrade timeline. If you need help matching a part number or confirming compatibility, message us and we’ll help you confirm fit. This DK3300V is a practical, reliable choice for electricians, facilities managers, and maintenance teams aiming to keep electrical systems protected and downtime to a minimum.