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ABB ABB420B7W - Molded Case Circuit Breaker 20A 480V

United Fuses
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ABB420B7W is a molded case circuit breaker designed for primary overcurrent and short-circuit protection in industrial power distribution systems. It is rated for 480V AC operation with a current rating of 20A, providing reliable interruption under fault conditions. The unit weighs 5.19 lb and features a compact, insulated case construction suitable for panelboard mounting. This breaker complies with UL 489 and CSA C22.2 standards for safety and performance. Typical applications include branch circuit protection in manufacturing facilities, commercial buildings, and motor control centers.

Key Features & Specifications
  • Type: Molded case circuit breaker, thermal-magnetic trip
  • Voltage Rating: 480V AC
  • Current Rating: 20A
  • Weight: 5.19 lb
  • Standards: UL 489, CSA C22.2
  • Applications: Branch circuit protection, industrial power distribution
  • Breaker Type: Molded case
  • Trip Type: Thermal-magnetic
  • Poles: 3
  • Frame Size: 100A
  • AIC Rating: 10kA @ 480V
  • Connection: Line and load lugs
  • Mounting: Panelboard
  • Phase: 3
  • Frequency Rating: 50/60 Hz
  • Operating Temperature Maximum Celsius: 40°C
  • Insulation Temperature: 75°C
  • Terminal Connection: Copper/aluminum rated
  • Circuit Breaker Mounting Style: Fixed
  • Installation Type: Plug-in or bolt-on
  • Enclosure: Open type


Product Identification
  • UPC: 662643420178
  • GTIN: 00662643420178