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Square D QO31001021 - Molded Case Circuit Breaker 100A 3P (10kA AIC)

Square D
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Square D QO31001021 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in three-phase electrical systems. It features a 100A current rating and a 240V AC voltage rating, housed within a compact 3.5 in (89 mm) x 3.0 in (76 mm) x 2.9 in (74 mm) frame with a plug-in connection and lug terminals for secure wiring from 2 to 8 AWG. This thermal-magnetic shunt trip breaker is CSA Certified and UL Listed, offering a 10kA interrupting capacity at 240V for safety compliance. It is engineered for installation in QO load centers and NQ panelboards to protect commercial and industrial power distribution circuits.

Key Features & Specifications
  • Type: Molded Case, Thermal-Magnetic Protection with Shunt Trip, LI (Long-Time and Instantaneous) Functions
  • Voltage Rating: 240V AC
  • Current Rating: 100A
  • Phase: 3
  • Poles: 3
  • AIC Rating: 10kA @ 240V
  • Frame Size: 100A/QO
  • Connection: Plug-In
  • Terminal Connection: Lug
  • MCM/Wire Size: 2 AWG (Max) to 8 AWG (Min)
  • Dimensions: 3.5 in H (89 mm) x 3.0 in W (76 mm) x 2.9 in D (74 mm)
  • Weight: 1.33 lb
  • Panel Type: QO Load Centers and NQ Panelboards
  • Standards & Certification: UL Listed, CSA Certified
  • Country of Origin: Mexico


Product Identification
  • Manufacturer: Schneider Electric
  • Family: QO Series
  • UPC: 785901030560
  • GTIN: 00785901030560