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Square D QO3100 - 3-Pole 100A Circuit Breaker (10kA AIC, 240V)

Square D
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Square D QO3100 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in three-phase electrical systems. It features a 100A current rating and a 240V AC voltage rating, housed within a compact plug-in unit measuring 3.5 in (89 mm) H x 2.2 in (57 mm) W x 2.9 in (74 mm) D and weighing 1.1 lb. The breaker is CSA Certified, HACR rated, and UL Listed, ensuring compliance with North American safety standards for use in QO load centers and NQ panelboards across commercial and industrial applications.

Key Features & Specifications
  • Type: Molded Case, Thermal Magnetic Protection with Long Time and Instantaneous Trip Functions
  • Voltage Rating: 240V AC
  • Current Rating: 100A
  • Frame Size: 100A/QO
  • Poles: 3
  • AIC Rating: 10kA @ 240V
  • Connection: Plug-In with Lug Terminal
  • Wire Size: AWG 4 to AWG 2/0 (Copper or Aluminum), MCM Size 8 AWG to 2 AWG
  • Dimensions: 3.5 in (89 mm) H x 2.2 in (57 mm) W x 2.9 in (74 mm) D
  • Operating Temperature: -25°C to 70°C (-13°F to 158°F)
  • Standards & Certification: CSA Certified, HACR, UL Listed
  • Panel Type: Compatible with QO Load Centers and NQ Panelboards
  • Phase: 3
  • Breaker Type: Standard
  • Protection: Thermal Magnetic
  • Weight: 1.1 lb


Product Identification
  • UPC: 785901004417
  • GTIN: 00785901004417