Eaton DK3300 - 300 A, 240 V, 3-Pole Circuit Breaker | AmpState

The Eaton DK3300 is a 3-pole molded case circuit breaker engineered to safeguard panelboards and load centers with reliable overcurrent and short-circuit protection. With a robust 300 A rating and a 240 V operating voltage, this breaker is a practical solution for demanding branch circuits in modern electrical environments.

• Space-efficient design: Compact molded case construction helps you maximize panel space while maintaining clean, organized wiring paths.
• Thermal-magnetic protection: The built-in thermal-magnetic trip unit provides stable, repeatable protection as electrical loads vary and temperatures fluctuate, reducing nuisance trips and improving reliability.
• Seamless compatibility: Specifically designed to be compatible with matching OEM loadcenters and panelboards, making upgrades or replacements straightforward without compatibility concerns.
• Versatile applications: Ideal for residential, commercial, and light industrial use—perfect for protecting large branch circuits and feeders in a variety of settings.
• Solid specifications: Part Number DK3300, Type: Thermal-magnetic molded case circuit breaker, 3 poles, 300 A, 240 V, intended for branch circuit overcurrent and short-circuit protection.

What problems does it solve?

When your panelboard or load center faces surge events or fault conditions, the DK3300 quickly disconnects the affected circuit to prevent damage to wiring, components, and downstream equipment. The thermal-magnetic mechanism combines temperature-based protection with fast magnetic trip action to handle both gradual overloads and high-current faults.

Use cases and practical scenarios

• Upgrading a panelboard to support higher-capacity feeders in a commercial space.
• Replacing aging or incompatible breakers in Eaton DK-series panelboards to maintain system integrity.
• Providing robust protection for large 3-phase circuits feeding motors, HVAC equipment, or production line feeders in light industrial applications.

Installation considerations

Ensure the panelboard is compatible with Eaton DK-series devices and that the bus connections are suitable for a 3-pole, 240 V configuration. This unit is designed for straightforward replacement in compatible OEM loadcenters, minimizing downtime during maintenance or upgrades.

Dependable protection, streamlined panel layouts, and clear compatibility—the Eaton DK3300 is ready to secure your critical circuits with precision and confidence.