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Square D QO120AS - 1-Pole 20A Circuit Breaker (10kA AIC)

Square D
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Square D QO120AS is a molded case circuit breaker designed for providing reliable overcurrent protection in residential and light commercial electrical systems. This single-pole, plug-in unit features a 20A current rating and a 120V voltage rating, utilizing a thermal-magnetic trip mechanism for both long-time and instantaneous (LI) protection functions. Its compact, durable construction with a 10kA interrupting rating at 120V AC ensures safe operation, and it complies with industry standards for circuit protection devices. The breaker is engineered for integration into compatible load centers to safeguard branch circuits against overloads and short circuits.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Plug-In Connection
  • Voltage Rating: 120V AC
  • Current Rating: 20A
  • Poles: 1
  • Phase: 1
  • AIC Rating: 10kA @ 120V
  • Protection Functions: Long-Time and Instantaneous (LI)
  • Connection Type: Plug-In
  • Family/Series: QO Series, Type QO-AS
  • Weight: 0.55 lb


Product Identification
  • Manufacturer Part Number: QO120AS