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Westinghouse JB21250SM - Molded Case 250A 2-Pole 600V

Westinghouse
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Westinghouse JB21250SM Circuit Breaker - Molded Case 250A 2-Pole 600V The Westinghouse JB21250SM is a molded case circuit breaker from the AB DE-ION family, designed for instantaneous magnetic-only protection in industrial power distribution systems. This 2-pole, single-phase unit is rated for 250A at 600V AC and provides an interrupting capacity of 22kA at 480V, with a feed-thru connection for straightforward installation. Weighing 17 lb, the Type JB breaker features a fixed mounting configuration and a thermal magnetic trip unit to safeguard against overcurrent conditions. It complies with IEC 60947-2 standards, making it suitable for use as a line protection device in commercial and industrial electrical systems.

Key Features & Specifications
  • Manufacturer: Westinghouse
  • Item Subcategory: Molded Case
  • Family: AB DE-ION
  • Type: JB
  • Weight: 17 lb
  • Functions: I - Instantaneous
  • Voltage Rating: 600V
  • Poles: 2
  • Connection: Feed-Thru
  • Protection: Magnetic Only
  • AIC rating: 22kA@480V
  • Phase: 1
  • Current Rating: 250A
  • Frame Amperage: 250 Amps
  • Mounting Type: Fixed
  • Trip Unit: Thermal Magnetic
  • Voltage Rating: Up to 415V AC
  • Standards: IEC 60947-2 Compliant
  • Category of Use: Line Protection Device