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Square D QO310 - 3-Pole Circuit Breaker 10A 240V (10kA AIC)

Square D
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Square D QO310 is a three-pole molded case circuit breaker designed for providing reliable overcurrent protection in three-phase electrical systems. It features a 10A current rating and a 240V AC voltage rating, housed within a compact plug-in unit measuring 76 mm H x 57 mm W x 74 mm D and weighing 0.77 lb. This thermal-magnetic breaker, with a 10 kA interrupting rating at 240V, is constructed with a 100A frame and pressure plate terminals, accepting wire sizes from 14 to 8 AWG. It is fully compliant with UL, CSA, and HACR standards for safety and interoperability. The QO310 is typically applied in commercial and light industrial settings for protecting branch circuits in compatible QO load centers and NQ panelboards.

Key Features & Specifications
  • Type: Three-pole, plug-in, thermal-magnetic molded case circuit breaker
  • Voltage Rating: 240V AC
  • Current Rating: 10A
  • Dimensions: 3.0 in (76 mm) H x 2.2 in (57 mm) W x 2.9 in (74 mm) D
  • Standards: UL Listed, CSA Certified, HACR
  • Applications: Branch circuit protection in QO load centers and NQ panelboards
  • Switch Type: Circuit Breaker
  • Configuration: Plug-In
  • Phase: 3
  • AIC Rating: 10 kA @ 240V
  • Connection: Plug-In
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: Long-Time and Instantaneous (LI)
  • Frame Size: 100A/QO
  • Trip Type: Thermal Magnetic
  • Panel Type: QO Load Centers and NQ Panelboards
  • Breaker Type: Standard
  • Temp Rating: 40°C (104°F) maximum ambient
  • MCM Size: 14 AWG to 8 AWG
  • Terminal Connection: Pressure plate
  • Certification: HACR, UL Listed
  • Weight: 0.77 lb


Product Identification
  • UPC: 78590147748
  • GTIN: 00785901477488