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Square D Q1B120 - Molded Case Circuit Breaker 20A 1-Pole 120V

Square D
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Square D Q1B120 is a 1-pole bolt-on molded case circuit breaker from the Q1B Series, designed to provide thermal magnetic protection for branch circuits. It is rated for 20A at 120V with a 10kA interrupting capacity and features LI (Long-Time and Instantaneous) trip functions for reliable overcurrent protection. The unit weighs 1 lb and uses a bolt-on connection for secure installation in compatible load centers. This breaker complies with UL and CSA standards for safety and performance. It is well-suited for residential and commercial electrical distribution systems requiring dependable circuit interruption.

Key Features & Specifications
  • Type: Molded Case
  • Family: Q1B Series
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 120V
  • Current Rating: 20A
  • Poles: 1
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC Rating: 10kA at 120V
  • Phase: 1
  • Weight: 1 lb
  • Certifications: UL, CSA