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Westinghouse 371D957G74 - Molded Case Breaker 225A 600V 3P

Westinghouse
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The Westinghouse 371D957G74 is a three-pole molded case circuit breaker from the JA Series, designed for instantaneous magnetic-only protection in industrial power distribution systems. It is rated for 600V AC, 225A continuous current, and an interrupting capacity of 22kA at 480V, with a bolt-on connection for secure panel mounting. Weighing 19 lb, this Type JA breaker features a compact molded case construction and instantaneous (I) trip function, providing rapid response to short-circuit faults without thermal overload protection. It complies with applicable industry standards for molded case circuit breakers and is suitable for use in three-phase, 600V industrial applications requiring high fault current interruption. This item does not include lugs; for wiring specifications, consult a sales representative for the appropriate lug part number.

Key Features & Specifications
  • Type: Molded Case, JA Series, Type JA, Instantaneous (I) Trip
  • Voltage Rating: 600V AC
  • Current Rating: 225A
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Magnetic Only
  • AIC Rating: 22kA@480V
  • Phase: 3
  • Functions: I - Instantaneous
  • Weight: 19 lb
  • Additional Info: This item does not include lugs. For lugs, contact a sales representative with wiring specifications.


Product Identification
  • Manufacturer: Westinghouse
  • Model: 371D957G74
  • Family: JA Series
  • Type: JA