Cutler Hammer DK3400 - 400A Molded Case Breaker (65kA AIC, 3-Pole)
Cutler Hammer DK3400 - 400A Molded Case Breaker (65kA AIC, 3-Pole)
Cutler Hammer DK3400 - 400A Molded Case Breaker (65kA AIC, 3-Pole)
Cutler Hammer DK3400 - 400A Molded Case Breaker (65kA AIC, 3-Pole)

Cutler Hammer DK3400 - 400A Molded Case Breaker (65kA AIC, 3-Pole)

Cutler Hammer
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Cutler Hammer DK3400 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in industrial power distribution systems. It features a 400A current rating and a 240V AC voltage rating, housed within a compact 14" x 6.5" x 7" (LxHxW) bolt-on frame. This thermal-magnetic breaker is CSA Certified, IEC Rated, and UL Listed, ensuring compliance with key industry standards for safety and performance. Its 65kA interrupting rating at 240V and three-pole configuration make it suitable for integration into motor control centers, switchboards, and enclosed controls from major manufacturers like Allen-Bradley, Eaton, and Westinghouse.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Series C Family
  • Voltage Rating: 240V AC
  • Current Rating: 400A
  • Frame Size: 400A/K
  • Poles: 3
  • AIC Rating: 65kA @ 240V
  • Connection: Bolt-On, Line/Load Lug Terminals
  • Functions: LI (Long-Time and Instantaneous Trip)
  • Phase Connection: 3-Phase (ABC)
  • Wire Size Compatibility: 400 MCM Min. to 500 MCM Max.
  • Operating Temperature: -4°F to 158°F (-20°C to 70°C)
  • Dimensions: 14 in x 6.5 in x 7 in (Length/Depth x Height x Width)
  • Weight: 12.6 lb
  • Standards & Certification: UL Listed, CSA Certified, IEC Rated
  • Compatible Panel Types: Allen Bradley MCC, Eaton MCC, Rockwell Automation Enclosed Control, Switchboard, Westinghouse
  • Country of Origin: Dominican Republic


Product Identification
  • UPC: 786679044155
  • GTIN: 00786679044155