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Westinghouse 1256C10G03 - Molded Case 300A 600V Breaker

Westinghouse
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Westinghouse 1256C10G03 is a molded case circuit breaker from the MARK 75 family, designed to provide overcurrent protection for electrical circuits. This 2-pole, 300A unit operates at 600V and features a thermal magnetic protection mechanism with LI (Long-Time and Instantaneous) trip functions. The breaker weighs 26 lb and utilizes a bolt-on connection for secure installation, with a 35kA interrupting capacity at 480V in a single-phase configuration. It is built to meet industry standards for industrial power distribution and motor control applications. This breaker is typically used in commercial and industrial settings for branch circuit protection and feeder protection in panelboards and switchboards.

Key Features & Specifications
  • Type: Molded Case, Thermal Magnetic, LI trip
  • Voltage Rating: 600V
  • Current Rating: 300A
  • Poles: 2
  • Phase: 1
  • Connection: Bolt-On
  • AIC Rating: 35kA@480V
  • Weight: 26 lb
  • Family: MARK 75
  • Type: HLA
  • Functions: LI - Long-Time and Instantaneous
  • Protection: Thermal Magnetic


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