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Square D QOB2501021 - 2-Pole 50A Circuit Breaker (10kA AIC)

Square D
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Square D QOB2501021 is a molded case circuit breaker designed for providing reliable overcurrent protection in single-phase electrical systems. It features a 50A current rating and a 120/240VAC voltage rating, housed within a compact 100A/QO frame with dimensions of 79 mm H x 57 mm W x 74 mm D and a weight of 0.95 lb. This thermal magnetic shunt trip breaker provides both long-time and instantaneous (LI) protection, utilizing a bolt-on connection and pressure plate terminals suitable for wire sizes from 2 to 8 AWG. It is CSA and UL Listed, meeting industry standards with an interrupting capacity of 10kA at 120V, and is engineered for installation in Square D NQOD panelboards within an operating temperature range of 40°C (104°F).

Key Features & Specifications
  • Type: Molded Case, Thermal Magnetic, Shunt Trip
  • Voltage Rating: 120/240VAC
  • Current Rating: 50A
  • Frame Size: 100A/QO
  • Poles: 2
  • Phase: 1
  • AIC Rating: 10kA @ 120V
  • Connection: Bolt-On
  • Terminal Connection: Pressure Plate
  • Functions: LI (Long-Time and Instantaneous)
  • Protection: Thermal Magnetic
  • Panel Type: Square D NQOD Panelboards
  • MCM Size: 8 AWG to 2 AWG
  • Dimensions: 3.1 in H (79 mm) x 2.2 in W (57 mm) x 2.9 in D (74 mm)
  • Weight: 0.95 lb
  • Temp Rating: 40°C (104°F)
  • Standards: CSA, UL Listed
  • Certification: UL Listed
  • Family: QOB Series
  • Country of Origin: Mexico


Product Identification
  • UPC: 785901494348
  • GTIN: 00785901494348