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Westinghouse 504C743G17 - Molded Case Circuit Breaker 70A 600V

Westinghouse
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The Westinghouse 504C743G17 is a 3-pole molded case circuit breaker from the MARK 75 family, designed to protect electrical circuits from overloads and short circuits using thermal magnetic protection. It is rated for a maximum voltage of 600V AC and a continuous current of 70A, with an interrupting capacity of 35kA at 480V AC. This bolt-on unit weighs 19 lb and features an HKA frame type with LI (Long-Time and Instantaneous) trip functions for precise overcurrent response. The breaker complies with IEC 60947-2 standards, ensuring reliable performance in low voltage distribution systems. Typical applications include industrial and commercial power distribution where robust circuit protection is required.

Key Features & Specifications
  • Type: Molded Case
  • Family: MARK 75
  • Type: HKA
  • Poles: 3
  • Voltage Rating: 600V AC
  • Current Rating: 70A
  • Interrupt Rating: 35kA at 480V
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Connection: Bolt-On
  • Phase: 3
  • Weight: 19 lb
  • Continuous Rating: 40 degrees Celsius
  • Compliance: IEC 60947-2


504C743G17