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Square D QOB225 - Molded Case Circuit Breaker 25A 2-Pole

Square D
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Square D QOB225 is a molded case circuit breaker designed for providing reliable overcurrent protection in commercial and industrial electrical systems. It features a 25A current rating and a 120/240VAC voltage rating, housed within a compact 76mm x 38mm x 74mm (HxWxD) bolt-on unit with a 100A/QO frame. This thermal-magnetic breaker, compliant with CSA and UL standards, offers LI (Long-time and Instantaneous) trip functions with a 10kA interrupting rating at 120V for robust fault protection. Its pressure plate terminals accept copper or aluminum conductors from AWG 14 to 8, and it is engineered for operation in temperatures from -25°C to 70°C, making it suitable for installation in Square D NQOD panelboards.

Key Features & Specifications
  • Type: Molded Case, Thermal Magnetic Protection, Standard Breaker
  • Voltage Rating: 120/240VAC
  • Current Rating: 25A
  • Dimensions: 3.0 in (76 mm) H x 1.5 in (38 mm) W x 2.9 in (74 mm) D
  • Weight: 0.57 lb
  • Standards: CSA, UL Listed
  • Applications: Commercial and Industrial Panelboards
  • Switch Type: Circuit Breaker
  • Configuration: Bolt-On
  • Temp Rating: -25°C to 70°C
  • Phase: 1
  • AIC Rating: 10kA @ 120V
  • Connection: Bolt-On
  • Poles: 2
  • Protection: Thermal Magnetic
  • Functions: LI (Long-Time and Instantaneous Trip)
  • Frame Size: 100A/QO
  • Panel Type: Square D NQOD Panelboards
  • Breaker Type: Standard
  • MCM Size: Min. Wire Size 14 AWG, Max. Wire Size 8 AWG
  • Terminal Connection: Pressure Plate
  • Wire Size: AWG 14 to AWG 8, Copper/Aluminum
  • Certification: UL Listed


Product Identification
  • UPC: 785901368281
  • GTIN: 00785901368281