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Westinghouse JB3700SM - Molded Case 250A 3-Pole 600V

Westinghouse
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The Westinghouse JB3700SM is a 3-pole molded case circuit breaker from the AB DE-ION family, designed for magnetic-only instantaneous protection against short circuits and high-level faults. It is rated for 600V AC, 250A continuous current, and a 22kA interrupting capacity at 480V, with a bolt-on connection for secure installation in 3-phase power distribution systems. Weighing 19 lb, this Type JB breaker features an instantaneous (I) trip function, providing rapid response to overcurrent events without thermal delay, and is constructed for industrial environments requiring reliable fault isolation. It complies with applicable industry standards for molded case circuit breakers, ensuring consistent performance in demanding applications. This breaker is typically used in industrial motor control centers, switchboards, and panelboards where magnetic-only protection is specified for feeder circuits and equipment.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, AB DE-ION Family, Type JB
  • Voltage Rating: 600V AC
  • Current Rating: 250A
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Magnetic Only
  • AIC Rating: 22kA@480V
  • Phase: 3
  • Functions: I - Instantaneous
  • Weight: 19 lb
  • Standards: Complies with applicable industry standards for molded case circuit breakers
  • Applications: Industrial motor control centers, switchboards, panelboards


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