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Square D AR139 - Circuit Breaker 600V 100A

Square D
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Square D AR139 is a molded case circuit breaker designed for overcurrent protection and electrical system isolation in industrial power distribution. It is rated for 600 volts AC and carries a current rating of 100 amperes, with a robust construction featuring a thermoplastic housing and a thermal-magnetic trip mechanism. The unit complies with UL 489 and CSA C22.2 standards, ensuring reliable performance in demanding environments. This breaker is commonly applied in motor control centers, panelboards, and switchboards for branch circuit protection.

Key Features & Specifications
  • Type: Molded case circuit breaker, thermal-magnetic trip, thermoplastic housing
  • Voltage Rating: 600 V AC
  • Current Rating: 100 A
  • Dimensions: Not specified
  • Standards: UL 489, CSA C22.2
  • Applications: Motor control centers, panelboards, switchboards
  • Weight: 5.19 lb


Product Identification
  • Manufacturer: Square D
  • Model: AR139