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Square D QO2125 - 2-Pole Circuit Breaker 125A 120/240V

Square D
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Square D QO2125 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in residential and light commercial electrical systems. It features a 125A current rating and a 120/240V AC voltage rating, housed within a compact 3.5 in (89 mm) H x 1.5 in (38 mm) W x 2.9 in (74 mm) D plug-in frame. This thermal-magnetic breaker is CSA Certified, UL Listed, and HACR approved, ensuring compliance with key North American safety standards for installation in QO load centers and NQ panelboards.

Key Features & Specifications
  • Type: Standard, 2-pole, thermal-magnetic molded case circuit breaker with long-time and instantaneous (LI) trip functions
  • Voltage Rating: 120/240V AC
  • Current Rating: 125A
  • Frame Size: 100A/QO
  • AIC Rating: 10kA @ 240V AC
  • Connection: Plug-in with lug terminals
  • Phase: 1
  • Wire Size: Accepts copper or aluminum conductors from AWG 4 to 2/0 (MCM size 1/0 AWG to 300 MCM)
  • Standards & Certification: CSA Certified, UL Listed, HACR
  • Operating Temperature: -25 to 70 °C (-13 to 158 °F)
  • Dimensions: 3.5 in H x 1.5 in W x 2.9 in D (89 mm x 38 mm x 74 mm)
  • Weight: 0.75 lb
  • Panel Type: Compatible with QO Load Centers and NQ Panelboards


Product Identification
  • UPC: 785901031093
  • GTIN: 00785901031093