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Square D QOU145 - Molded Case Circuit Breaker 45A 1-Pole

Square D
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Square D QOU145 is a molded case circuit breaker designed for providing reliable overcurrent protection in industrial and commercial electrical systems. It features a 45A current rating and a 120V voltage rating for single-phase applications, housed in a compact bolt-on unit measuring 4.05 in (102.87 mm) H x 0.75 in (19.05 mm) W x 2.95 in (74.93 mm) D and weighing 0.369 lb. The breaker is UL listed, IEC, and CSA certified, ensuring compliance with key industry standards for safety and performance. Its thermal-magnetic protection with long-time and instantaneous (LI) trip functions makes it suitable for protecting feeders and branch circuits in panelboards and switchboards.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Bolt-On Connection
  • Voltage Rating: 120V AC
  • Current Rating: 45A
  • Dimensions: 4.05 in H x 0.75 in W x 2.95 in D (102.87 mm x 19.05 mm x 74.93 mm)
  • Standards: UL Listed, IEC, CSA
  • Applications: Industrial and Commercial Panelboards, Switchboards, Feeder and Branch Circuit Protection
  • Switch Type: Circuit Breaker
  • Configuration: Single-Pole
  • Phase: 1
  • AIC Rating: 10kA @ 120V
  • Connection: Bolt-On
  • Poles: 1
  • Protection: Thermal Magnetic
  • Functions: LI (Long-Time and Instantaneous)
  • Wire Size: AWG 14 to AWG 2 (Aluminium/Copper)
  • Certification: UL listed, IEC, CSA
  • Family: QOU Series
  • Country of Origin: Mexico
  • Weight: 0.369 lb


Product Identification
  • UPC: 785901489139
  • GTIN: 00785901489139