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Square D QO3301021 - 3-Pole Shunt Trip Breaker (30A, 240V)

Square D
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Square D QO3301021 is a three-pole shunt trip circuit breaker designed for overcurrent protection in three-phase electrical systems. It features a 30A current rating and a 240V AC voltage rating, housed within a compact 76 mm x 76 mm x 74 mm (3.0 in x 3.0 in x 2.9 in) plug-in frame. This thermal-magnetic breaker provides both long-time and instantaneous trip functions, is CSA Certified and UL Listed, and operates reliably in temperatures from -25°C to 70°C (-13°F to 158°F). It is typically applied in industrial and commercial settings for branch circuit protection within QO load centers and NQ panelboards, offering a 10kA interrupting capacity at 240V.

Key Features & Specifications
  • Type: Three-pole, shunt trip, molded case circuit breaker with thermal-magnetic protection
  • Voltage Rating: 240V AC
  • Current Rating: 30A
  • Dimensions: 76 mm H x 76 mm W x 74 mm D (3.0 in x 3.0 in x 2.9 in)
  • Standards: CSA Certified, UL Listed
  • Applications: Branch circuit protection in QO load centers and NQ panelboards
  • Switch Type: Circuit Breaker
  • Configuration: Plug-In
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Phase: 3
  • AIC rating: 10kA @ 240V
  • Connection: Plug-In
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: 100A/QO
  • Breaker Type: Shunt Trip
  • Panel Type: QO Load Centers and NQ Panelboards
  • MCM Size: Min. 12 AWG (Al), 14 AWG (Cu); Max. 8 AWG
  • Terminal Connection: Pressure plate
  • Wire Size: AWG 14 to AWG 8 Copper/Aluminum
  • Certification: UL Listed
  • Weight: 1.14 lb


Product Identification
  • UPC: 785901494119
  • GTIN: 00785901494119