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Westinghouse JB22250SMW - Molded Case Breaker 250A 2-Pole

Westinghouse
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Westinghouse JB22250SMW is a 2-pole molded case circuit breaker from the AB DE-ION family, designed for instantaneous magnetic-only overcurrent protection in industrial power distribution systems. It is rated for 250A at a maximum voltage of 600V AC, with an interrupting capacity of 22kA at 480V AC. This bolt-on unit weighs 17 lb and features a single-phase, instantaneous trip function for precise short-circuit protection. The breaker is UL Listed under Class 19a per Federal Specification W-C-375b, ensuring compliance with rigorous safety standards. It is typically applied in commercial and industrial settings requiring reliable magnetic-only protection for motor circuits and other high-inrush loads.

Key Features & Specifications
  • Manufacturer: Westinghouse
  • Item Subcategory: Molded Case
  • Family: AB DE-ION
  • Type: JB
  • Weight: 17 lb
  • Functions: I - Instantaneous
  • Voltage Rating: 600V AC
  • Poles: 2
  • Connection: Bolt-On
  • Protection: Magnetic Only
  • AIC rating: 22kA@480V
  • Phase: 1
  • Current Rating: 250A
  • Frame Amperage: 250A
  • Trip Amperage: 250A
  • Trip Unit: Thermal Magnetic
  • Series: AB DE-ION
  • Interrupting Rating: 22,000A symmetrical at 600V AC
  • UL Listed: Class 19a per Federal Specification W-C-375b


Part Number: JB22250SMW