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Square D QBA221753 - Molded Case Circuit Breaker 175A 240V 2-Pole

Square D
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Square D QBA221753 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in industrial and commercial electrical systems. It features a 175A current rating and a 240V AC voltage rating, housed within a compact Q Frame measuring 164.34 mm H x 76.2 mm W x 99.82 mm D and weighing 4.72 lb. The breaker is constructed for robust performance with thermal-magnetic protection offering long-time and instantaneous (LI) trip functions, and it complies with UL, CSA, NEMA, and NOM standards. Its I-Line style plug-in connection and 10kA interrupting capacity at 240V make it suitable for panelboards and switchboards in a wide operating temperature range of -25 to 70 °C.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection with Long-Time and Instantaneous (LI) Trip
  • Voltage Rating: 240V AC
  • Current Rating: 175A
  • Dimensions: 6.47 in (164.34 mm) H x 3 in (76.2 mm) W x 3.93 in (99.82 mm) D
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000
  • Applications: Industrial and Commercial Panelboards, Switchboards
  • Switch Type: Circuit Breaker
  • Configuration: Plug-In
  • Temp Rating: -13–158 °F (-25–70 °C)
  • Phase: 1
  • AIC Rating: 10kA @ 240V
  • Connection: I-Line Style Plug-In
  • Poles: 2
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous Trip
  • Frame Size: Q Frame
  • Certification: UL, CSA, NOM
  • Item Subcategory: Molded Case
  • Family: PowerPact Q
  • Breaker Type: QBA
  • Weight: 4.72 lb


Product Identification
  • Manufacturer Part Number: QBA221753
  • Brand: Square D