Cutler Hammer E30KD400 - 400A Molded Case Breaker (600V AC)
Cutler Hammer E30KD400 - 400A Molded Case Breaker (600V AC)

Cutler Hammer E30KD400 - 400A Molded Case Breaker (600V AC)

Cutler Hammer
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Cutler Hammer E30KD400 is a 400-amp molded case circuit breaker designed for primary overcurrent and short-circuit protection in industrial power distribution systems. It operates at 600V AC maximum with a current rating of 400A, featuring a thermal-magnetic trip mechanism for reliable fault interruption. The unit measures 5 inches in depth, 0.2 inches in height, and 4 inches in width, weighing 0.1 lb, with a compact, panel-mount construction suitable for enclosed switchboards. It complies with UL 489 and NEMA AB-1 standards for safety and performance in commercial and industrial environments. Typical applications include main feeder protection, motor control centers, and branch circuit protection in manufacturing plants and heavy machinery installations.

Key Features & Specifications
  • Type: Molded case circuit breaker, thermal-magnetic trip
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Dimensions: 5 in x 0.2 in x 4 in (Length/Depth x Height x Width)
  • Weight: 0.1 lb
  • Standards: UL 489, NEMA AB-1
  • Applications: Industrial power distribution, main feeder protection, motor control centers
  • Breaker Type: E30KD400
  • Frame Size: 400A frame
  • Trip Type: Thermal-magnetic
  • Poles: 3-pole
  • Phase: 3-phase
  • Frequency Rating: 50/60 Hz
  • AIC Rating: 65 kAIC at 240V AC, 35 kAIC at 480V AC, 25 kAIC at 600V AC
  • Connection: Line and load side lugs
  • Protection: Overcurrent and short-circuit
  • Mounting: Panel mount
  • Enclosure: Open type
  • Terminal Connection: Copper or aluminum lugs
  • Wire Size: #6 AWG to 600 MCM
  • Insulation Temperature: 75°C
  • Operating Temperature: -20°C to 60°C
  • Certification: UL listed, CSA certified


Product Identification
  • UPC: 78211321731
  • GTIN: 00782113217314