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Westinghouse HMC3400M - Molded Case 400A 3-Pole

Westinghouse
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Westinghouse HMC3400M Circuit Breaker - 400A 3-Pole Molded Case The Westinghouse HMC3400M is a 3-pole molded case circuit breaker designed for instantaneous magnetic-only protection in industrial power distribution systems. It carries a voltage rating of 600V and a continuous current rating of 400A, with a high interrupting capacity of 50kA at 480V. This unit features a Mark 75 frame with bolt-on mounting and a non-interchangeable magnetic-only trip unit, weighing 34 lb. It complies with industry standards for robust short-circuit protection and reliable operation in demanding environments. Typical applications include commercial and industrial power distribution systems requiring dependable overcurrent protection.

Key Features & Specifications
  • Type: Molded Case
  • Family: Seltronic
  • Functions: I - Instantaneous
  • Voltage Rating: 600V
  • Current Rating: 400A
  • Poles: 3
  • Phase: 3
  • Connection: Bolt-On
  • Protection: Magnetic Only
  • AIC rating: 50kA@480V
  • Weight: 34 lb
  • Series/Frame: HMC Frame, Mark 75
  • Trip Unit: Magnetic Only, Non-Interchangeable


Part Number: HMC3400M