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Westinghouse 371D957G73 - Molded Case Breaker 225A 600V

Westinghouse
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The Westinghouse 371D957G73 is a JA Series molded case circuit breaker designed for instantaneous magnetic-only protection in three-phase industrial power systems. It is rated for 600V AC, 225A continuous current, with a 22kA interrupting capacity at 480V, and features a three-pole bolt-on connection configuration. Weighing 19 lb, this unit provides instantaneous trip response without thermal protection, making it suitable for motor and equipment branch circuits where short-circuit protection is prioritized over overload. It complies with applicable industry standards for molded case breakers and is typically applied in manufacturing, heavy machinery, and process control environments requiring robust magnetic-only protection. This item does not include lugs; for lug requirements, consult a sales representative with wiring specifications.

Key Features & Specifications
  • Type: Molded Case, JA Series, Instantaneous (I) magnetic-only protection
  • 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.


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