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Square D QOB320-1021 - Molded Case Breaker 20A 3-Pole (120/240VAC)

Square D
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Square D QOB320-1021 is a three-pole, 20-amp molded case circuit breaker designed for overcurrent protection in branch circuits. It operates at 120/240VAC with a 10kA interrupt rating and features a thermal magnetic trip unit providing long-time and instantaneous (LI) protection. This bolt-on mounted breaker weighs 5.19 lb and utilizes pressure plate terminals for secure connections with AWG 14 or AWG 8 copper or aluminum wire. It is UL Listed and CSA certified, meeting industry standards for safety and performance. The QOB320-1021 is suitable for industrial and commercial applications requiring reliable circuit protection in three-phase systems.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Manufacturer: Square D
  • Family: QOB Series
  • Type: QOB
  • Current Rating: 20 Amps
  • Poles: 3
  • Phase: 3
  • Voltage Rating: 120/240VAC, 48 VDC
  • AIC Rating: 10 kA 120/240 V AC 50/60 Hz, 10 kA 240 V AC 50/60 Hz, 10 kA 120 V AC 50/60 Hz, 5 kA 48 V DC
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Circuit Breaker Mounting Style: Bolt-On
  • Mounting: Bolt-On
  • Connection: Bolt-On
  • Terminal Connection: Pressure Plate
  • Wire Size: AWG 14, AWG 8 Copper or Aluminium
  • Weight: 5.19 lb
  • Standards: CSA, UL Listed
  • Certification: UL Listed


Product Identification
  • UPC: 7.85902E+11
  • GTIN: 7.85902E+11