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Westinghouse MARK 75 HMA - 700A Molded Case Breaker 600V

Cutler Hammer
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Westinghouse MARK 75 HMA is a 700A molded case circuit breaker designed for overcurrent protection in industrial power distribution systems. This two-pole, single-phase unit operates at a voltage rating of 600V with a 35kA interrupting capacity at 480V, providing thermal magnetic protection through LI (Long-Time and Instantaneous) trip functions. The breaker features a bolt-on connection type, weighs 47 lb, and is constructed for robust performance in demanding environments. It complies with industry standards for molded case circuit breakers, ensuring reliable operation in commercial and industrial applications. Typical uses include main feeder protection, panelboard protection, and motor control center protection in manufacturing facilities and heavy industrial settings.

Key Features & Specifications
  • Type: Molded Case, Thermal Magnetic
  • Voltage Rating: 600V
  • Current Rating: 700A
  • Poles: 2
  • Phase: 1
  • AIC Rating: 35kA@480V
  • Connection: Bolt-On
  • Protection: LI - Long-Time and Instantaneous
  • Family: MARK 75
  • Type: HMA
  • Weight: 47 lb


Product Identification
  • Manufacturer: Westinghouse
  • Item Subcategory: Molded Case