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Westinghouse 504C743G20 - Molded Case 125A 600V

Westinghouse
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Westinghouse 504C743G20 is a 3-pole, 600-volt, 125-ampere bolt-on circuit breaker from the MARK 75 family, designed for branch circuit and feeder protection in industrial and commercial applications. It provides thermal-magnetic protection with LI (Long-Time and Instantaneous) trip functions, and features a 35kA interrupting rating at 480V. The molded case construction and bolt-on mounting ensure secure installation on standard distribution panels and switchboards. This breaker is suitable for motor control circuits, HVAC equipment, and general industrial OEM applications requiring dependable overcurrent protection.

Key Features & Specifications
  • Type: HKA
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 600V AC maximum
  • Current Rating: 125A continuous at 40 degrees Celsius
  • Poles: 3-pole configuration
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 35kA@480V
  • Phase: 3
  • Weight: 19 lb
  • Family: MARK 75


504C743G20