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Cutler Hammer KD3300 - Molded Case Circuit Breaker 300A 600V 3P

Cutler Hammer
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Cutler Hammer KD3300 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in demanding three-phase industrial power systems. It features a 300A current rating and a 600V voltage rating, housed within a compact 400A frame with dimensions of 4.1" x 5.5" x 5.5" (LxHxW) and a weight of 11.5 lb. This thermal-magnetic breaker, compliant with UL, CSA, and IEC standards, offers 35kA interrupting capacity at 480V and is constructed for operation in temperatures from -4°F to 158°F. Its bolt-on, three-pole configuration with line/load lugs accommodates wire sizes from 250 MCM to 3 AWG, making it suitable for integration into motor control centers, switchboards, and enclosed control panels from major manufacturers.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Series C Family, KD Type
  • Voltage Rating: 600V AC
  • Current Rating: 300A
  • Frame Size: 400A/K
  • Poles: 3
  • AIC Rating: 35kA @ 480V
  • Connection: Bolt-On
  • Terminal Connection: Line/Load Lug
  • Phase Connection: ABC
  • Functions: LI (Long-Time and Instantaneous)
  • Protection: Thermal Magnetic
  • Breaker Type: Standard
  • Temp Rating: -4°F to 158°F (-20°C to 70°C)
  • MCM Size: 250 MCM Min. to 3 AWG Max.
  • Dimensions: 4.1 in (D) x 5.5 in (H) x 5.5 in (W)
  • Weight: 11.5 lb
  • Standards: UL Listed, CSA Certified, IEC Rated
  • Panel Type: Compatible with Allen Bradley MCC, Eaton MCC, Rockwell Automation Enclosed Control, Switchboard, Westinghouse


Product Identification
  • UPC: 786679349175
  • GTIN: 00786679349175