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Cutler Hammer KD3350 - Molded Case Circuit Breaker 350A 600V 3P

Cutler Hammer
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Cutler Hammer KD3350 is a molded case circuit breaker designed for providing reliable overcurrent protection in three-phase industrial power systems. It features a 350A continuous current rating and a 600V AC voltage rating, housed within a compact 400A frame with dimensions of 4.1" D x 5.5" H x 5.5" W and a weight of 11.5 lb. This thermal-magnetic trip unit provides both long-time and instantaneous protection, achieving a 35kA interrupting rating at 480V AC, and is constructed for operation in temperatures from -25°C to 70°C. The breaker is CSA Certified, IEC Rated, and UL Listed, ensuring compliance with key North American and international standards. Its bolt-on, three-pole configuration with line/load lugs accommodates wire sizes from 250 MCM to 3 AWG, making it suitable for installation in motor control centers, switchboards, and enclosed controls from major manufacturers like Allen-Bradley, Eaton, and Rockwell Automation.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Bolt-On Connection
  • Voltage Rating: 600V AC
  • Current Rating: 350A
  • Frame Size: 400A/K
  • Poles: 3
  • AIC Rating: 35kA @ 480V AC
  • Phase Connection: 3-Phase, ABC
  • Dimensions: 4.1 in (Depth) x 5.5 in (Height) x 5.5 in (Width)
  • Weight: 11.5 lb
  • Terminal Connection: Line/Load Lug
  • Wire Size Range: 250 MCM to 3 AWG
  • Trip Functions: Long Time and Instantaneous
  • Operating Temperature: -25°C to 70°C (-13°F to 158°F)
  • Standards & Certification: CSA Certified, IEC Rated, UL Listed
  • Compatible Panel Types: Allen Bradley MCC, Eaton MCC, Rockwell Automation Enclosed Control, Switchboard, Westinghouse
  • Breaker Type: Standard
  • Family: Series C
  • Country of Origin: Dominican Republic


Product Identification
  • UPC: 786679349182
  • GTIN: 00786679349182