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Eaton KDC3350Y - Molded Case Circuit Breaker 350A 600V 3-Pole

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Eaton KDC3350Y is a three-pole molded case circuit breaker from the Series C family, designed for thermal-magnetic protection in commercial and industrial power distribution systems. It is rated for 350A at 600VAC and 250VDC, with a high interrupting capacity of 100kA at 480VAC, and features LI (Long-Time and Instantaneous) trip functions for reliable overload and short-circuit protection. The breaker utilizes a K-Frame construction with bolt-on mounting and aluminum terminals, supporting both aluminum and copper wiring, and weighs 12 lb. This unit complies with industry standards for 50/60 Hz operation and is suitable for 3-phase systems requiring robust circuit protection. Typical applications include main or feeder protection in switchboards, panelboards, and industrial control panels.

Key Features & Specifications
  • Manufacturer: Eaton
  • Item Subcategory: Molded Case
  • Family: Series C
  • Type: KDC
  • Weight: 12 lb
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: K Frame
  • Voltage Rating: 600VAC, 250VDC
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC Rating: 100kA@480V
  • Phase: 3
  • Current Rating: 350A
  • Frequency: 50/60 Hz
  • Terminal Material: Aluminum
  • Connection Type: Line and Load
  • Trip Unit: Fixed Thermal, Fixed Magnetic


Part Number: KDC3350Y