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Westinghouse JA3700MW - Molded Case Circuit Breaker 225A 600V

Westinghouse
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Westinghouse JA3700MW is a 3-pole molded case circuit breaker from the JA Series, designed for instantaneous magnetic-only protection in industrial power distribution systems. It is rated for 225A continuous current at 600V AC, with a high interrupting capacity of 22kA at 480V, and features a bolt-on connection for secure panel mounting. Weighing 19 lb, this J-frame breaker uses a fixed mount configuration and provides instantaneous trip response without thermal elements, making it suitable for motor and feeder circuit protection. It complies with IEC 60947-2 standards for low voltage applications. Typical applications include industrial switchboards, motor control centers, and commercial distribution panels requiring reliable short-circuit protection.

Key Features & Specifications
  • Manufacturer: Westinghouse
  • Part Number: JA3700MW
  • Type: Molded Case Circuit Breaker (MCCB)
  • Family: JA Series
  • Frame/Series: J Frame
  • Poles: 3
  • Amperage: 225A
  • Voltage Rating: 600V AC
  • Phase: 3
  • Functions: I - Instantaneous
  • Protection: Magnetic Only
  • Connection: Bolt-On
  • Mounting Type: Fixed
  • AIC Rating: 22kA@480V
  • Weight: 19 lb
  • Standards: IEC 60947-2 Compliant
  • Additional Info: Lugs are not included