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Westinghouse 504C743G03 - Molded Case 90A 2-Pole (MARK 75 HKA)

Westinghouse
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Westinghouse 504C743G03 Circuit Breaker - Molded Case 90A 2-Pole (MARK 75 HKA) The Westinghouse 504C743G03 is a 90-amp, 2-pole molded case circuit breaker from the MARK 75 HKA family, designed for overcurrent protection in industrial power distribution systems. It operates at a maximum voltage rating of 600V and provides a 35kA interrupting capacity at 480V, with a thermal magnetic protection mechanism offering long-time and instantaneous (LI) trip functions. This bolt-on unit weighs 17 lb and features a single-phase configuration, ensuring reliable performance in demanding environments. It complies with industry standards for molded case circuit breakers, making it suitable for use in panelboards, switchboards, and motor control centers.

Key Features & Specifications
  • Type: Molded Case, HKA
  • Voltage Rating: 600V
  • Current Rating: 90A
  • Poles: 2
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 35kA@480V
  • Phase: 1
  • Functions: LI - Long-Time and Instantaneous
  • Weight: 17 lb
  • Family: MARK 75


Product Identification
  • Manufacturer: Westinghouse
  • Model: 504C743G03