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Square D QOB270 - 70A 2-Pole Circuit Breaker (10kA AIC)

Square D
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Square D QOB270 is a molded case circuit breaker designed for providing reliable overcurrent protection in single-phase electrical systems. It features a 70A current rating and a 120/240VAC voltage rating, housed within a compact 79mm x 38mm x 74mm (HxWxD) bolt-on unit. The breaker is constructed with a thermal-magnetic trip mechanism for both long-time and instantaneous protection, operates within a temperature range of -25°C to 70°C, and is certified to UL and CSA standards. It is typically applied in Square D NQOD panelboards for commercial and light industrial power distribution, offering a 10kA interrupting capacity at 120V and accepting copper or aluminum conductors from 8 AWG to 2 AWG via its pressure plate terminals.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Standard Type
  • Voltage Rating: 120/240VAC
  • Current Rating: 70A
  • Dimensions: 3.1 in (79 mm) H x 1.5 in (38 mm) W x 2.9 in (74 mm) D
  • Weight: 0.613 lb
  • Standards: UL Listed, CSA
  • Applications: Commercial and Light Industrial Power Distribution
  • Switch Type: Circuit Breaker
  • Configuration: Bolt-On
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Phase: 1
  • AIC Rating: 10kA @ 120V
  • Connection: Bolt-On
  • Poles: 2
  • Protection: Thermal Magnetic
  • Functions: Long-Time and Instantaneous Trip (LI)
  • Frame Size: 100A/QO
  • Panel Type: Square D NQOD Panelboards
  • Breaker Type: Standard
  • MCM Size: Min. Wire Size 8 AWG, Max. Wire Size 2 AWG
  • Terminal Connection: Pressure Plate
  • Wire Size: AWG 8 to AWG 2, Copper or Aluminum
  • Certification: UL Listed


Product Identification
  • Manufacturer: Schneider Electric
  • Family: QOB Series
  • Type: QOB
  • Country of Origin: Mexico
  • UPC: 785901417040
  • GTIN: 00785901417040