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Square D QOB21251021 - Molded Case Circuit Breaker 125A 2-Pole

Square D
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Square D QOB21251021 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in single-phase electrical systems. It features a 125A current rating and a 120/240VAC voltage rating, housed within a compact, bolt-on frame measuring 3.5 in (89 mm) H x 2.2 in (57 mm) W x 2.9 in (74 mm) D and weighing 1.02 lb. The breaker is constructed with a thermal-magnetic trip unit for long-time and instantaneous protection and complies with CSA and UL Listed standards. Its typical applications include protection of feeders and branch circuits in industrial and commercial panelboards.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Bolt-On Connection
  • Voltage Rating: 120/240VAC
  • Current Rating: 125A
  • Dimensions: 3.5 in (89 mm) H x 2.2 in (57 mm) W x 2.9 in (74 mm) D
  • Standards: CSA, UL Listed
  • Applications: Industrial and Commercial Feeder/Branch Circuit Protection
  • Switch Type: Circuit Breaker
  • Configuration: 2-Pole
  • 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
  • Terminal Connection: Pressure Plate
  • Wire Size: AWG 4 to AWG 2/0, Copper/Aluminum
  • Certification: UL Listed
  • Frame Size: QOB
  • Family: QOB Series
  • Country of Origin: Mexico


Product Identification
  • UPC: 785901120650
  • GTIN: 00078590172950