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Westinghouse 504C743G21 - Molded Case Breaker 150A 600V 3-Pole

Westinghouse
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Save $-2,712.21
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The Westinghouse 504C743G21 is a three-pole molded case circuit breaker from the MARK 75 family, designed to provide overcurrent protection through thermal magnetic operation. It is rated for 600V AC, 150A, and 35kA interrupting capacity at 480V, with LI (Long-Time and Instantaneous) trip functions for precise fault response. This bolt-on unit weighs 19 lb and is constructed for three-phase industrial power distribution systems. It complies with applicable industry standards for molded case breakers. Typical applications include protecting feeders, motors, and branch circuits in commercial and industrial electrical panels.

Key Features & Specifications
  • Manufacturer: Westinghouse
  • Item Subcategory: Molded Case
  • Family: MARK 75
  • Type: HKA
  • Weight: 19 lb
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 600V
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 35kA@480V
  • Phase: 3
  • Current Rating: 150A


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