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Square D QOB145 - Molded Case Breaker 45A 1-Pole (10kA AIC)

Square D
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Square D QOB145 is a molded case circuit breaker designed for providing reliable overcurrent protection in single-phase electrical systems. It features a 45A current rating and a 120/240VAC voltage rating, housed in a compact, bolt-on unit measuring 79 mm x 19 mm x 74 mm (H x W x D) and weighing 0.31 lb. The breaker utilizes a thermal-magnetic trip mechanism for both long-time and instantaneous protection, is CSA and UL Listed, and is rated for an interrupting capacity of 10kA at 120V. Its pressure plate terminals accept copper or aluminum conductors from AWG 8 to AWG 2, making it suitable for a range of commercial and light industrial panel applications.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Bolt-On Connection
  • Voltage Rating: 120/240VAC
  • Current Rating: 45A
  • Dimensions: 3.1 in (79 mm) H x 0.7 in (19 mm) W x 2.9 in (74 mm) D
  • Standards: CSA, UL Listed
  • Applications: Commercial and Light Industrial Electrical Panels
  • Switch Type: Circuit Breaker
  • Configuration: Single-Pole
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Phase: 1
  • AIC Rating: 10kA @ 120V
  • Connection: Bolt-On
  • Poles: 1
  • Protection: Thermal Magnetic
  • Functions: Long-Time and Instantaneous Trip
  • Terminal Connection: Pressure Plate
  • Wire Size: AWG 8 to AWG 2, Copper/Aluminum
  • Certification: UL Listed


Product Identification
  • UPC: 078590150992
  • GTIN: 00785901509929