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Square D QHB120 - Molded Case Circuit Breaker, 20A 1-Pole

Square D
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Square D QHB120 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in 120V AC electrical systems. It features a 20A current rating and a 65kA interrupting capacity at 120V, housed in a compact bolt-on unit measuring 76 mm x 19 mm x 74 mm (H x W x D) and weighing 0.27 lb. Constructed with thermal-magnetic trip protection for both long-time and instantaneous (LI) fault conditions, it operates within a temperature range of -25 to 70 °C and accepts copper or aluminum wire from 14 to 8 AWG via its pressure plate terminals. This UL Listed and CSA certified, single-pole breaker is engineered for integration into industrial control panels and commercial electrical distribution equipment where dependable circuit protection is required.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Standard, Thermal Magnetic Protection with Long-Time and Instantaneous (LI) Trip
  • Voltage Rating: 120V AC
  • Current Rating: 20A
  • Dimensions: 3.0 in (76 mm) H x 0.7 in (19 mm) W x 2.9 in (74 mm) D
  • Weight: 0.27 lb
  • Standards: UL Listed, CSA Certified
  • Applications: Industrial control panels, commercial electrical distribution
  • Switch Type: Circuit Breaker
  • Configuration: Single Unit
  • Temp Rating: -25 to 70 °C (-13 to 158 °F)
  • Phase: 1
  • AIC Rating: 65kA @ 120V
  • Connection: Bolt-On
  • Poles: 1
  • Protection: Thermal Magnetic
  • Functions: Long-Time and Instantaneous Trip (LI)
  • Breaker Type: Standard
  • Wire Size: 14 AWG to 8 AWG (Cu/Al)
  • Terminal Connection: Pressure Plate
  • Certification: UL Listed, CSA
  • Family: QOB Series
  • Country of Origin: United States


Product Identification
  • UPC: 785901255383
  • GTIN: 00785901255383