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Square D QOB320AS - 3-Pole Molded Case Circuit Breaker 20A 120/240VAC

Square D
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Square D QOB320AS is a 3-pole bolt-on molded case circuit breaker from the QOB Series, designed for thermal magnetic overcurrent protection in commercial and industrial power distribution systems. It is rated for 20A at 120/240VAC with a 10kA interrupting capacity at 240V, providing LI (Long-Time and Instantaneous) protection functions. The unit weighs 5 lb and features a pressure plate terminal connection for secure wiring, with a 3-phase configuration. It is CSA and UL Listed, ensuring compliance with North American safety standards. This breaker is typically used in panelboards and load centers for branch circuit protection in industrial facilities, manufacturing plants, and commercial buildings.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, QOB Series, Bolt-On
  • Voltage Rating: 120/240VAC
  • Current Rating: 20A
  • Poles: 3
  • Phase: 3
  • AIC Rating: 10kA@240V
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Connection: Bolt-On
  • Terminal Connection: Pressure Plate
  • Weight: 5 lb
  • Standards: CSA, UL Listed
  • Certification: UL Listed