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Westinghouse HKA3125TA - Thermal Magnetic Circuit Breaker 125A 3-Pole

Westinghouse
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Westinghouse HKA3125TA is a three-pole molded case circuit breaker from the MARK 75 family, designed to provide thermal magnetic protection for electrical distribution systems. It is rated for 125 amps continuous current at 40°C with a maximum voltage of 600V AC, and features LI (Long-Time and Instantaneous) trip functions for precise overcurrent protection. The unit weighs 2 lb and uses bolt-on mounting for secure installation, compatible with KA and HKA breaker frames. This breaker meets industry standards for high fault current protection, offering a 22kA interrupting capacity at 480V. It is suited for industrial and commercial power distribution applications requiring reliable circuit interruption.

Key Features & Specifications
  • Type: HKA
  • Family: MARK 75
  • Poles: 3
  • Amperage: 125A
  • Voltage Rating: 600V AC
  • Interrupt Rating: 22kA @ 480V
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Mounting Type: Bolt-On
  • Continuous Rating: 125A @ 40°C
  • Weight: 2 lb
  • Compatible Frames: KA, HKA


Part Number: HKA3125TA