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THHQB2120AF - Circuit Breaker 20A 120/240VAC

United Fuses
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THHQB2120AF is a molded case circuit breaker designed for overcurrent protection in industrial power distribution systems. It is rated for 120/240 VAC and carries a current rating of 20 amps, providing reliable interruption of fault currents. The unit weighs 5.19 lb and features a compact construction suitable for panelboard installation. This breaker complies with UL 489 standards for safety and performance. It is commonly used in commercial and industrial electrical panels for branch circuit protection.

Key Features & Specifications
  • Type: Molded case circuit breaker, thermal-magnetic trip
  • Voltage Rating: 120/240 VAC
  • Current Rating: 20 A
  • Weight: 5.19 lb
  • Standards: UL 489
  • Applications: Branch circuit protection in industrial panelboards
  • Breaker Type: THHQB
  • Frame Size: 1-inch per pole
  • Poles: 1
  • Connection: Plug-in
  • Phase: 1
  • Amperage: 20 A
  • Voltage: 120/240 VAC
  • Circuit Breaker Mounting Style: Plug-in
  • Terminal Connection: Line and load lugs
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Single-phase
  • Installation Type: Panelboard
  • Item QTY: 1
  • Current Rating: 20 A
  • Operating Temperature Maximum Celsius: 40°C


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