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Square D QYU120 - 20A 1-Pole Bolt-On Circuit Breaker (277V)

Square D
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Square D QYU120 is a 1-pole molded case circuit breaker designed for overcurrent protection in commercial and industrial electrical distribution systems. It is rated for 20A at 277V AC with a 5kA interrupting capacity at 277V, providing reliable fault interruption. The unit features a bolt-on connection for secure unit mount installation, measures 3.09 inches deep by 4.44 inches wide, and weighs 0.36 lb. This breaker is UL listed and built to industry standards for dependable performance. Typical applications include branch circuit protection in panelboards and load centers within commercial and industrial facilities.

Key Features & Specifications
  • Type: QYU
  • Amperage: 20 Amps
  • Voltage Rating: 277 Volts AC
  • Number of Poles: 1 Pole
  • Mounting Type: Bolt-On (Unit Mount)
  • Interrupt Rating: 5kA at 277V
  • Frame/Series: QOU
  • Trip Unit: Standard Thermal-Magnetic
  • Certifications: UL Listed
  • Item Subcategory: Molded Case
  • Country of Origin: Mexico
  • Dimensions: Depth 3.09 in (78.49 mm) x Width 4.44 in (112.78 mm)
  • Weight: 0.36 lb
  • Phase: 1