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Square D QOB3125VH - 3-Pole Circuit Breaker 125A 120/240VAC

Square D
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Square D QOB3125VH is a three-pole molded case circuit breaker designed for providing reliable overcurrent protection in three-phase commercial and industrial electrical systems. It features a 125A current rating and a 120/240VAC voltage rating, with a compact bolt-on design measuring 145 mm H x 114 mm W x 124 mm D and a weight of 3.9 lb for integration into Square D NQOD panelboards. The unit employs a thermal-magnetic trip mechanism for both long-time and instantaneous protection, is rated for 22kA interrupting capacity at 240V, and is certified to UL and CSA standards for operation from -25°C to 70°C. Its pressure plate terminals accommodate copper or aluminum conductors from 4 AWG to 300 kcmil, making it suitable for feeder and branch circuit applications in demanding environments.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Bolt-On Connection
  • Voltage Rating: 120/240V AC
  • Current Rating: 125 Amps
  • Dimensions: 5.7 in (145 mm) H x 4.5 in (114 mm) W x 4.9 in (124 mm) D
  • Standards: UL Listed, CSA
  • Applications: Commercial & Industrial Feeder/Branch Circuit Protection
  • Switch Type: Circuit Breaker
  • Configuration: Three-Pole
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Phase: 3
  • AIC Rating: 22kA @ 240V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: 100A/QO
  • Panel Type: Square D NQOD Panelboards
  • Breaker Type: High Interrupting Capacity
  • MCM Size: Min. 4 AWG, Max. 300 kcmil
  • Wire Size: AWG 4 to 300 kcmil, Copper or Aluminum
  • Certification: UL Listed
  • Terminal Connection: Pressure Plate
  • Family: QOB Series
  • Country of Origin: Mexico


Product Identification
  • UPC: 785901065470
  • GTIN: 00785901065470