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Eaton HKDDC3350 - 3-Pole 350A Molded Case Breaker

Cutler Hammer
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Eaton HKDDC3350 is a 3-pole molded case circuit breaker from the Series C family, designed to provide thermal-magnetic overcurrent protection with long-time and instantaneous (LI) trip functions for industrial electrical systems. Rated at 350A and 600VAC/250VDC, it delivers a 42kA interrupting capacity at 600VAC, ensuring robust fault clearing in high-demand environments. The unit features a K-frame bolt-on construction with dimensions of 4.1 in depth x 5.5 in height x 5.5 in width and weighs 3 lb, supporting compact panel layouts. This breaker complies with industry standards for molded case circuit breakers, making it suitable for three-phase power distribution applications requiring reliable protection against overloads and short circuits.

Key Features & Specifications
  • Type: HKDDC
  • Family: Series C
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: K Frame
  • Current Rating: 350A
  • Voltage Rating: 600V
  • Poles: 3
  • Phase: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC Rating: 42kA@600V
  • Dimensions: 4.1 in x 5.5 in x 5.5 in (Length/Depth x Height x Width)
  • Weight: 3 lb


Product Identification
  • UPC: 786689056667
  • GTIN: 00786689056667