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Square D QOB3705273 - Molded Case 70A 3-Pole 120/240VAC

Square D
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The Square D QOB3705273 is a three-pole molded case circuit breaker designed for overcurrent protection in industrial and commercial power distribution systems. It operates at 120/240VAC with a 10kA interrupting capacity at 120V and a 70A current rating, utilizing a bolt-on connection and pressure plate terminals for secure installation. This compact unit measures 3.1 inches in height, 2.2 inches in width, and 2.9 inches in depth, weighing 1.11 lb, and is constructed as part of the QOB series for panelboard mounting. It is UL Listed and CSA certified, meeting rigorous safety and performance standards for branch circuit protection. Typical applications include protecting feeders and equipment in three-phase industrial machinery, lighting panels, and commercial electrical systems.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Voltage Rating: 120/240VAC
  • Current Rating: 70A
  • Dimensions: 3.1 in (79 mm) x 2.2 in (57 mm) x 2.9 in (74 mm) (Height x Width x Depth)
  • Standards: CSA, UL Listed
  • Applications: Industrial and commercial power distribution
  • Switch Type: Thermal-magnetic
  • Configuration: Three-pole
  • Phase: 3
  • Amperage: 70A
  • AIC rating: 10kA@120V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Overcurrent
  • Frame Size: QOB
  • Trip Type: Thermal-magnetic
  • Panel Type: QOB panelboards
  • Breaker Type: Molded Case
  • Terminal Connection: Pressure Plate
  • Certification: UL Listed
  • Circuit Breaker Mounting Style: Bolt-On
  • Frequency Rating: 60 Hz
  • Phase Connection: Three-phase
  • Standards: CSA, UL Listed
  • Installation Type: Panelboard
  • Item QTY: 1
  • Breaker Frame: QOB
  • Current Rating: 70A
  • Weight: 1.11 lb
  • Country of Origin: Mexico


Product Identification
  • UPC: 078590189300