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Eaton DK3300Y - Molded Case Breaker 300A 240V 3-Pole

Cutler Hammer
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Eaton DK3300Y is a molded case circuit breaker from the Series C family, designed to provide thermal-magnetic protection for electrical circuits. This 3-pole, 300A breaker is rated for 240V with a 65kA interrupting capacity at 240V, utilizing LI (Long-Time and Instantaneous) trip functions. The unit features a K Frame, bolt-on connection, and measures 4.1 inches in depth by 5.5 inches in height by 5.5 inches in width, weighing 11.5 lb. It is UL Listed and manufactured in the Dominican Republic. This breaker is suitable for industrial applications requiring reliable overcurrent protection in three-phase power distribution systems.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Voltage Rating: 240V
  • Current Rating: 300A
  • Dimensions: 4.1 in x 5.5 in x 5.5 in (Length/Depth x Height x Width)
  • Standards: UL Listed
  • Applications: Industrial power distribution
  • Switch Type: Circuit Breaker
  • Configuration: 3 Pole
  • Coil Voltage Maximum: Not applicable
  • Temp Rating: Not specified
  • Shipping Dimensions: Not specified
  • Phase: 3
  • Voltage: 240V
  • Amperage: 300A
  • AIC rating: 65kA@240V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: K Frame
  • Trip Type: Thermal Magnetic
  • Panel Type: Not specified
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not specified
  • Metal Type: Not specified
  • Panel Style: Not specified
  • Bus Type: Not specified
  • Fuse Class: Not applicable
  • Insulation Temperature: Not specified
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not specified
  • Class Rating: Not specified
  • Diameter: Not specified
  • Velocity: Not specified
  • Clip Center: Not specified
  • Clas: Not specified
  • Mounting: Bolt-On
  • Hz: Not specified
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: Not specified
  • Dist Voltage: Not specified
  • Bucket Size: Not specified
  • Bucket Style: Not specified
  • Bucket Type: Not specified
  • Full Load Amp Maximum: Not specified
  • Full Load Amp Minimum: Not specified
  • Enclosure: Not specified
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 300A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Not applicable
  • Wire Size: Not specified
  • Certification: UL Listed
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Bolt-On
  • Frequency Rating: Not specified
  • Phase Connection: 3 Phase
  • Standards: UL
  • Compatible Frames: K Frame
  • Installation Type: Panelboard
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: K Frame
  • Current Rating: 300A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not specified
  • Peak Pulse Current: Not applicable
  • Breakdown Voltage (MIN VBR@IT ) (V): Not applicable
  • Breakdown Voltage (VBR@IT) (V): Not applicable
  • Polarity: Not applicable
  • Operating Temperature Maximum Celsius: Not specified
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 786679044599
  • GTIN: 00786679044599