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Square D HJA36050SA - 50A 3-Pole Molded Case Breaker

Square D
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Square D HJA36050SA is a 3-pole molded case circuit breaker designed for primary power distribution protection in commercial and industrial environments. This unit is rated for 50A at 600V and provides a 65kA interrupting capacity at 480V, employing a thermal-magnetic trip mechanism with LI (Long-Time and Instantaneous) functions. The breaker measures 6.42 inches in height, 3.09 inches in depth, and 4.44 inches in width, weighing 5 lb, and features an I-Line style plug-in connection for direct mounting in panelboards and switchboards. It is UL Listed and CSA Certified, ensuring compliance with North American safety standards, and operates within a temperature range of 28 to 158 °F (-2 to 70 °C). This model is suited for demanding power distribution systems requiring robust overcurrent protection, and it comes complete with a 120V shunt trip for remote tripping capability.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Manufacturer: Square D
  • Part Number: HJA36050SA
  • Amperage: 50A
  • Voltage: 600V
  • Poles: 3
  • Phase: 3
  • Interrupt Rating: 65kA @ 480V
  • Mounting Type: I-Line
  • Series/Frame: PowerPact H
  • Trip Unit: Thermal-Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Connection: I-Line Style Plug-In
  • Wire Size: AWG 14...AWG 3/0 aluminum/copper terminal
  • Dimensions: Height 6.42 in (163 mm) x Depth 3.09 in (78.49 mm) x Width 4.44 in (112.78 mm)
  • Weight: 5 lb
  • Temp Rating: 28-158 °F (-2-70 °C)
  • Additional Info: complete with 120V shunt trip
  • UL Listed
  • CSA Certified
  • Application: Power Distribution