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Westinghouse MA3400T - Thermal Magnetic Trip Unit 400A 600V 3-Pole

Westinghouse
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Westinghouse MA3400T is a thermal magnetic circuit breaker designed for overcurrent protection in industrial power distribution systems. It is rated for 600V AC, 400A continuous current, and features LI (Long-Time and Instantaneous) trip functions for precise fault response. This 3-pole unit weighs 4 lb and is constructed as a trip unit compatible with MA and HMA frame sizes. It complies with applicable industry standards for electrical safety and performance. Typical applications include motor control centers, switchboards, and panelboards requiring reliable thermal magnetic protection.

Key Features & Specifications
  • Type: Thermal Magnetic Trip Unit
  • Voltage Rating: 600V
  • Current Rating: 400A (Minimum 400A, Maximum 400A)
  • Poles: 3
  • Functions: LI - Long-Time and Instantaneous
  • Protection: Thermal Magnetic
  • Compatible Frames: MA, HMA
  • Weight: 4 lb
  • Family: MA Series
  • Item Subcategory: Trip Units & Programmers


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