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Westinghouse FB3090S - Molded Case 90A 3-Pole 600V

Westinghouse
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Westinghouse FB3090S is a 3-pole molded case circuit breaker from the AB DE-ION family, designed for thermal magnetic overcurrent protection in industrial and commercial power distribution systems. It is rated for 90A continuous current with a 150A frame, a maximum voltage of 600V AC, and an interrupting capacity of 14kA at 480V AC, utilizing LI (Long-Time and Instantaneous) trip functions. The unit weighs 11 lb and features a bolt-on connection with load side lug mounting, ensuring secure installation in panelboards and switchgear. This breaker complies with applicable industry standards for legacy system integration and is suitable for branch circuit protection in manufacturing facilities, commercial buildings, and infrastructure requiring reliable overcurrent interruption.

Key Features & Specifications
  • Type: Molded Case
  • Family: AB DE-ION
  • Type: FB
  • Poles: 3
  • Phase: 3
  • Current Rating: 90A
  • Frame Rating: 150A
  • Voltage Rating: 600V AC
  • Interrupt Rating: 14,000 Amps at 480V
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Connection: Bolt-On
  • Mounting Type: Load Side Lugs
  • Weight: 11 lb