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Westinghouse MA3300T - Thermal Magnetic Trip Unit 300A 600V 3P

Westinghouse
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The Westinghouse MA3300T is a thermal-magnetic circuit breaker trip unit designed for overcurrent protection in industrial power distribution systems. It provides LI (Long-Time and Instantaneous) protection functions, operating at a voltage rating of 600V with a current rating of 300A across three poles. This unit weighs 4 lb and is constructed as a trip unit and programmer within the MA Series, compatible with MA and HMA frames. It meets industry standards for thermal-magnetic protection in demanding electrical environments. Typical applications include protecting motors, transformers, and feeder circuits in manufacturing plants and commercial facilities.

Key Features & Specifications
  • Type: Thermal Magnetic Trip Unit
  • Voltage Rating: 600V
  • Current Rating: 300A (Minimum: 300, Maximum: 300)
  • Poles: 3
  • Functions: LI - Long-Time and Instantaneous
  • Compatible Frames: MA, HMA
  • Weight: 4 lb
  • Family: MA Series
  • Item Subcategory: Trip Units & Programmers


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