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Square D QOB21001021 - Molded Case Circuit Breaker 100A 2-Pole

Square D
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Square D QOB21001021 is a molded case circuit breaker designed for providing reliable overcurrent protection in commercial and industrial electrical systems. It features a 100A current rating and a voltage rating of 120/240VAC, housed in a compact, bolt-on configuration measuring 3.5 in (89 mm) H x 2.2 in (57 mm) W x 2.9 in (74 mm) D with a weight of 1 lb. This shunt trip breaker utilizes thermal-magnetic protection with long-time and instantaneous (LI) functions, is CSA and UL Listed, and is engineered for compatibility with Square D NQOD panelboards in single-phase applications.

Key Features & Specifications
  • Type: Molded Case, Shunt Trip, Thermal-Magnetic Protection
  • Voltage Rating: 120/240VAC
  • Current Rating: 100A
  • Frame Size: 100A/QO
  • AIC Rating: 10kA @ 120V
  • Poles: 2
  • Connection: Bolt-On
  • Terminal Connection: Pressure Plate
  • Phase: 1
  • Functions: LI (Long-Time and Instantaneous)
  • Panel Type: Square D NQOD Panelboards
  • Standards & Certification: CSA, UL Listed
  • Dimensions: 3.5 in H x 2.2 in W x 2.9 in D (89 mm x 57 mm x 74 mm)
  • Weight: 1 lb
  • MCM Size / Wire Range: Min. 8 AWG, Max. 2 AWG
  • Temp Rating: 104°F (40°C) Minimum and Maximum Operating Temperature
  • Family: QOB Series
  • Country of Origin: Mexico


Product Identification
  • UPC: 785901031017
  • GTIN: 00785901031017