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Westinghouse JB31500SM - Molded Case Breaker 250A 600V 3-Pole

Westinghouse
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The Westinghouse JB31500SM is a molded case circuit breaker from the AB DE-ION family, designed for instantaneous magnetic-only protection in industrial power systems. This three-phase, three-pole unit is rated for 600V AC and 250A, with an interrupting capacity of 22kA at 480V, and utilizes a bolt-on connection for secure installation. Weighing 19 lb, the Type JB breaker features a compact construction optimized for high-fault environments, relying solely on magnetic trip elements to respond to short circuits without thermal delay. It complies with industry standards for overcurrent protection in commercial and industrial settings. Typical applications include motor control centers, switchboards, and distribution panels requiring instantaneous fault interruption.

Key Features & Specifications
  • Type: Molded Case, AB DE-ION Family, Type JB
  • Voltage Rating: 600V AC
  • Current Rating: 250A
  • Poles: 3
  • Phase: 3
  • Connection: Bolt-On
  • Protection: Magnetic Only (Instantaneous)
  • AIC Rating: 22kA@480V
  • Functions: I - Instantaneous
  • Weight: 19 lb


Product Identification
  • UPC: Not available
  • GTIN: Not available