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Square D QO250 - 2-Pole 50A Circuit Breaker (10kA AIC)

Square D
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Square D QO250 is a molded case circuit breaker designed for providing reliable overcurrent protection in residential and light commercial electrical systems. It features a 50A current rating and a 120/240V voltage rating, housed in a compact plug-in unit measuring 79 mm x 38 mm x 74 mm (H x W x D) with a lug terminal connection for secure wiring from AWG 8 to 300 MCM. This thermal-magnetic breaker, with a 10kA interrupting rating at 240V, is CSA Certified, UL Listed, and HACR approved, ensuring compliance with key safety standards for installation in QO load centers and NQ panelboards.

Key Features & Specifications
  • Type: Standard, 2-pole, plug-in molded case circuit breaker with thermal-magnetic protection and LI (Long-time and Instantaneous) trip functions
  • Voltage Rating: 120/240V AC
  • Current Rating: 50A
  • Frame Size: 100A/QO
  • AIC Rating: 10kA @ 240V
  • Phase: 1
  • Connection: Plug-In
  • Terminal Connection: Lug
  • Wire Size: AWG 8 to AWG 2, Copper/Aluminum; MCM Size: 1/0 AWG to 300 MCM
  • Dimensions: 3.1 in (79 mm) H x 1.5 in (38 mm) W x 2.9 in (74 mm) D
  • Weight: 0.62 lb
  • Temp Rating: -25 to 70 °C (-13 to 158 °F)
  • Protection: Thermal Magnetic
  • Panel Type: QO Load Centers and NQ Panelboards
  • Standards: CSA Certified, HACR, UL Listed


Product Identification
  • UPC: 785901400523
  • GTIN: 00785901400523