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Square D QOB150 - Molded Case Circuit Breaker 50A 1-Pole

Square D
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Square D QOB150 is a single-pole, bolt-on molded case circuit breaker designed to provide reliable overcurrent protection for 120/240VAC electrical circuits with a 50A current rating. Its compact design measures 79 mm x 19 mm x 74 mm (HxWxD) and features a thermal-magnetic trip mechanism providing both long-time and instantaneous (LI) protection, ensuring compliance with UL and CSA standards for safety. Constructed with a pressure plate terminal connection, it accommodates copper or aluminum conductors from AWG 8 to AWG 2 and is rated for operation in temperatures from -25°C to 70°C. This breaker is engineered for use in industrial and commercial panelboards, offering a 10kA interrupting capacity at 120V for effective fault protection.

Key Features & Specifications
  • Type: QOB Series, Molded Case, Thermal Magnetic Protection, Bolt-On Connection
  • Voltage Rating: 120/240VAC
  • Current Rating: 50A
  • 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: Industrial and Commercial Panelboards
  • 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: LI - Long-Time and Instantaneous Trip
  • Terminal Connection: Pressure Plate
  • Wire Size: AWG 8 to AWG 2, Cu/Al
  • Certification: UL Listed
  • Weight: 0.31 lb


Product Identification
  • UPC: 785901416807
  • GTIN: 00785901416807