Square D QOB350VH1021 - 50A 3-Pole Bolt-On Circuit Breaker (22kA@240V)
Square D QOB350VH1021 - 50A 3-Pole Bolt-On Circuit Breaker (22kA@240V)

Square D QOB350VH1021 - 50A 3-Pole Bolt-On Circuit Breaker (22kA@240V)

Square D
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Square D QOB350VH1021 is a 3-pole molded case circuit breaker designed for non-automatic protection in electrical distribution systems. It is rated for 50A at 120/240VAC with a high interrupting capacity of 22kA at 240V, utilizing long-time and instantaneous trip functions for reliable overcurrent protection. The unit features a bolt-on connection, pressure plate terminals accepting AWG 8 to AWG 2 copper or aluminum wire, and compact dimensions of 3.1 in (79 mm) x 3.0 in (76 mm) x 2.9 in (74 mm) with a weight of 1.4 lb. It is UL Listed and CSA certified, compliant with industry standards for safety and performance. This breaker is suitable for residential, commercial, and industrial applications requiring robust circuit interruption.

Key Features & Specifications
  • Type: QOB
  • Current Rating: 50A
  • Voltage Rating: 120/240VAC
  • Poles: 3
  • Phase: 3
  • Interrupting Rating: 22kA at 240V
  • Connection: Bolt-On
  • Terminal Connection: Pressure Plate
  • Wire Size: AWG 8 to AWG 2, Copper/Aluminum
  • Functions: Long-Time and Instantaneous Trip
  • Protection: Non-Automatic
  • Dimensions: 3.1 in (79 mm) x 3.0 in (76 mm) x 2.9 in (74 mm) (Height x Width x Depth)
  • Weight: 1.4 lb
  • Temp Rating: -13°F to 158°F (-25°C to 70°C)
  • Standards: CSA, UL Listed
  • Certification: UL Listed
  • Family: QOB Series
  • Country of Origin: Mexico


Product Identification
  • UPC: 785901090250