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Square D QO270 - 70A 2-Pole Circuit Breaker (10kA AIC)

Square D
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Square D QO270 is a molded case circuit breaker designed for providing reliable overcurrent protection in residential and light commercial electrical systems. It features a 70A current rating and a 120/240V AC voltage rating, housed within a compact plug-in design measuring 79 mm H x 38 mm W x 74 mm D and weighing 0.6 lb. This thermal-magnetic breaker offers both long-time and instantaneous trip (LI) functions with a 10kA interrupting rating at 240V, and it is constructed for use with copper or aluminum conductors ranging from AWG 8 to 2. It complies with UL, CSA, and HACR standards for safety and is engineered for installation in QO load centers and NQ panelboards, operating effectively in temperatures from -25°C to 70°C.

Key Features & Specifications
  • Type: Molded Case, Standard, Thermal Magnetic Protection with LI (Long-time & Instantaneous) Trip
  • Voltage Rating: 120/240V AC
  • Current Rating: 70A
  • Frame Size: 100A/QO
  • Poles: 2
  • AIC Rating: 10kA @ 240V
  • Connection: Plug-In, Lug Terminal
  • Phase: 1
  • Wire Size: AWG 8 to AWG 2, Copper/Aluminum (MCM: 1/0 AWG Min - 300 MCM Max)
  • Dimensions: 3.1 in H (79 mm) x 1.5 in W (38 mm) x 2.9 in D (74 mm)
  • Weight: 0.6 lb
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Panel Type: QO Load Centers and NQ Panelboards
  • Standards & Certification: UL Listed, CSA Certified, HACR
  • Breaker Type: Standard
  • Functions: LI - Long-Time and Instantaneous Trip


Product Identification
  • UPC: 785901400585
  • GTIN: 00785901400585