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Cutler Hammer HKD3400F - Molded Case Circuit Breaker 400A 3P

Cutler Hammer
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The Cutler Hammer HKD3400F is a molded case circuit breaker designed to provide reliable overcurrent protection for three-phase industrial power distribution systems. It features a 400A current rating and a 600V AC voltage rating, housed within a compact K-frame measuring 4.1" x 5.5" x 5.5" and weighing 9.8 lb. This thermal magnetic breaker offers LI (Long-time and Instantaneous) protection functions, is UL Listed, and provides a 65kA interrupting capacity at 480V AC for robust fault protection. Its three-pole, bolt-on configuration is engineered for demanding applications in manufacturing plants, data centers, and commercial facilities, and is supplied as a frame-only unit requiring a separate trip unit and lugs for final assembly.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic Protection, LI (Long-time & Instantaneous) Functions
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Dimensions: 4.1 in (Depth) x 5.5 in (Height) x 5.5 in (Width)
  • Standards: UL Listed
  • Applications: Industrial power distribution, panelboards, switchgear
  • Phase: 3
  • AIC Rating: 65kA @ 480V AC
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: K Frame
  • Weight: 9.8 lb
  • Certification: UL Listed
  • Additional Info: Frame only; Trip unit and lugs not included.


Product Identification
  • UPC: 786679661956
  • GTIN: 00786679661956