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Square D QOB370 - 3-Pole 70A Circuit Breaker (10kA AIC)

Square D
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Square D QOB370 is a three-pole molded case circuit breaker designed for providing reliable overcurrent protection in three-phase electrical systems. It features a 70A current rating and a voltage rating of 120/240VAC, with a compact bolt-on design measuring 79 mm H x 57 mm W x 74 mm D and a weight of 0.959 lb. The breaker utilizes a thermal-magnetic trip mechanism for both long-time and instantaneous protection, is constructed for an operating temperature range of -25°C to 70°C, and complies with CSA and UL standards. It is engineered for use in Square D NQOD panelboards, offering 10kA interrupting capacity at 240V and accepting copper or aluminum conductors from AWG 8 to AWG 2 via its pressure plate terminals.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Standard, Thermal-Magnetic Protection
  • Voltage Rating: 120/240VAC
  • Current Rating: 70A
  • Frame Size: 100A/QO
  • Poles: 3
  • Phase: 3
  • AIC Rating: 10kA @ 240V
  • Connection: Bolt-On
  • Terminal Connection: Pressure Plate
  • Wire Size: AWG 8 to AWG 2 (Copper or Aluminum)
  • Functions: Long Time and Instantaneous Trip
  • Panel Type: Square D NQOD Panelboards
  • Standards: CSA, UL Listed
  • Certification: UL Listed
  • Temp Rating: -25°C to 70°C
  • Dimensions: 79 mm H x 57 mm W x 74 mm D (3.1 in x 2.2 in x 2.9 in)
  • Weight: 0.959 lb
  • Country of Origin: Mexico


Product Identification
  • UPC: 078590101974
  • GTIN: 00785901019749