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THHQB1120DF - Circuit Breaker 20A 120/240V AC

United Fuses
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THHQB1120DF is a molded case circuit breaker designed for overcurrent protection in electrical distribution systems. It is rated for 120/240 volts AC and 20 amps, providing reliable branch circuit protection. The breaker weighs 5.19 lb and features a compact construction suitable for panelboard installation. It complies with UL 489 standards for safety and performance. This breaker is commonly used in commercial and industrial applications for protecting lighting, appliance, and motor circuits.

Key Features & Specifications
  • Type: Molded case circuit breaker, thermal-magnetic trip
  • Voltage Rating: 120/240 V AC
  • Current Rating: 20 A
  • Weight: 5.19 lb
  • Standards: UL 489
  • Applications: Branch circuit protection in commercial and industrial panels
  • Breaker Type: THHQB
  • Frame Size: 1-inch per pole
  • Poles: 1
  • Connection: Plug-in
  • Phase: 1
  • Amperage: 20
  • AIC rating: 10 kA @ 120/240 V AC
  • Trip Type: Thermal-magnetic
  • Installation Type: Panelboard
  • Circuit Breaker Mounting Style: Plug-in
  • Terminal Connection: Lug
  • Frequency Rating: 60 Hz
  • Phase Connection: Single-phase
  • Standards: UL 489
  • Item QTY: 1
  • Current Rating: 20 A
  • Operating Temperature Maximum Celsius: 40 °C


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