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Westinghouse HMA3400 - Molded Case Breaker 400A 600V 3-Pole

Westinghouse
Price
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Westinghouse HMA3400 is a 3-pole thermal magnetic molded case circuit breaker designed for overcurrent protection in three-phase electrical systems. It is rated for 400 amps at 600VAC and provides a 35kA interrupting capacity at 480VAC, with LI (Long-Time and Instantaneous) trip functions. The unit weighs 54 lb and features a bolt-on mounting type with load side lug terminals, part of the Mark 75 family. This breaker complies with industry standards for reliable protection in industrial power distribution applications. It is typically used in commercial and industrial settings requiring robust circuit protection for motors, panels, and switchgear.

Key Features & Specifications
  • Manufacturer: Westinghouse
  • Item Subcategory: Molded Case
  • Family: MARK 75
  • Type: HMA
  • Weight: 54 lb
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 600VAC
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 35kA at 480VAC
  • Phase: 3
  • Current Rating: 400A
  • Frame Type: HMA (Mark 75 family)
  • Trip Unit: Thermal Magnetic, Interchangeable
  • Mounting Type: Bolt-On