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Westinghouse 371D426G18 - Molded Case Breaker 400A 600V (30kA AIC)

Westinghouse
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Westinghouse 371D426G18 is a molded case circuit breaker designed for providing instantaneous magnetic-only protection against short-circuit faults in three-phase electrical systems. It is rated for 600V AC applications with a continuous current rating of 400A and offers a 30kA interrupting capacity at 480V. The breaker features a robust three-pole, bolt-on connection design within the LAB series frame and is constructed to meet relevant industry standards for industrial power distribution equipment. Its instantaneous trip function makes it suitable for protecting feeders and mains in commercial and industrial panelboards where selective coordination is required.

Key Features & Specifications
  • Type: LAB Series Molded Case Circuit Breaker, Magnetic-Only Protection (Instantaneous)
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Phase: 3
  • Poles: 3
  • Connection: Bolt-On
  • AIC Rating: 30kA @ 480V
  • Trip Type/Function: I - Instantaneous
  • Frame: LAB Series
  • Weight: 29 lb
  • Additional Note: Lugs are not included; specific lug part numbers require wiring specifications.