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ABB520B9W - Molded Case Circuit Breaker 100A 480V

United Fuses
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ABB520B9W is a high-performance industrial circuit breaker designed for overcurrent protection in electrical distribution systems. It operates at a rated voltage of 480V AC and a current rating of 100A, ensuring reliable interruption of fault currents. The unit weighs 5.19 lb and features a compact molded case construction for easy panel mounting. It complies with UL 489 and CSA C22.2 standards for safety and performance. Typical applications include motor control centers, panelboards, and switchboards in manufacturing and commercial facilities.

Key Features & Specifications
  • Type: Molded case circuit breaker, thermal-magnetic trip
  • Voltage Rating: 480V AC
  • Current Rating: 100A
  • Weight: 5.19 lb
  • Standards: UL 489, CSA C22.2
  • Applications: Industrial motor control, panelboard protection
  • Breaker Type: Thermal-magnetic
  • Poles: 3
  • Frame Size: 100A frame
  • Trip Type: Fixed thermal, adjustable magnetic
  • Mounting: Panel mount
  • Frequency Rating: 50/60 Hz
  • Phase: 3-phase
  • Connection: Line and load lugs
  • AIC Rating: 25 kA at 480V AC
  • Enclosure: Open style
  • Certification: UL, CSA


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