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Westinghouse HFB31550ML - Molded Case 100A 600V 3-Pole

Westinghouse
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Westinghouse HFB31550ML Circuit Breaker - Molded Case 100A 600V 3-Pole The Westinghouse HFB31550ML is a 3-pole molded case circuit breaker from the MARK 75 family, designed for instantaneous magnetic-only protection in industrial power distribution systems. It is rated for 100A continuous current at 600VAC, with an interrupting capacity of 25kA at 480VAC, and features a feed-thru connection configuration. Weighing 11 lb, this unit utilizes a Type HFB frame and is constructed for three-phase applications, providing reliable overcurrent interruption without thermal delay. The breaker complies with applicable industry standards for molded case circuit breakers, ensuring robust performance in demanding environments. Typical applications include motor control centers, panelboards, and switchboards requiring instantaneous trip characteristics for short-circuit protection.

Key Features & Specifications
  • Type: HFB molded case circuit breaker, magnetic only, instantaneous trip
  • Voltage Rating: 600VAC
  • Current Rating: 100A
  • Poles: 3
  • Phase: 3
  • AIC Rating: 25kA@480V
  • Connection: Feed-Thru
  • Protection: Magnetic Only
  • Functions: I - Instantaneous
  • Family: MARK 75
  • Weight: 11 lb
  • Item Subcategory: Molded Case


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