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Eaton KD4300 - 300A 4-Pole Molded Case Breaker (600V)

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Eaton KD4300 is a 300 Amp, 600 Volt, 4-pole molded case circuit breaker from the Series C K-frame line, designed for overcurrent protection in electrical distribution systems. It utilizes a thermal magnetic trip unit with fixed long-time and instantaneous functions (LI) to safeguard against overloads and short circuits, supporting a maximum voltage of 600 VAC and 250 VDC with an interrupting rating of 35 kA at 480 VAC. The breaker measures 4.1 inches in depth, 5.5 inches in height, and 5.5 inches in width, weighs 11.5 lb, and features a bolt-on mounting type with feed-thru connection for secure installation. It is UL Listed and certified for industrial and commercial applications requiring robust circuit protection in three-phase systems.

Key Features & Specifications
  • Type: Molded Case
  • Manufacturer: Eaton
  • Family: Series C
  • Type: KD
  • Frame Size: K Frame
  • Current Rating: 300A
  • Voltage Rating: 600V
  • Poles: 4
  • Phase: 3
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Connection: Feed-Thru
  • Mounting Type: Bolt-on
  • AIC rating: 35kA@480V
  • Interrupt Rating: 65 kA at 240 VAC, 35 kA at 480 VAC
  • Frequency: 50/60 Hz
  • Dimensions: 4.1 in x 5.5 in x 5.5 in (Length/Depth x Height x Width)
  • Weight: 11.5 lb
  • Certification: UL Listed
  • Country of Origin: Dominican Republic


Product Identification
  • UPC: 786679045244
  • GTIN: 00786679045244