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Square D HJA36040AA - Molded Case 40A 3-Pole (600V AC)

Square D
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Square D HJA36040AA is a 3-pole molded case circuit breaker designed for overcurrent protection in industrial power distribution systems. It is rated for 40A at 600V AC, with a 65kA interrupting capacity at 480V, and utilizes thermal-magnetic protection with LI (Long-Time and Instantaneous) trip functions. The unit weighs 7.5 lb and features an I-Line style plug-in connection for secure panel mounting. This breaker complies with UL and NEMA standards for commercial and industrial applications. It is commonly used in switchboards, panelboards, and motor control centers requiring reliable branch circuit protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Voltage Rating: 600V AC
  • Current Rating: 40A
  • Poles: 3
  • Phase: 3
  • Connection: I-Line Style Plug-In
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • AIC Rating: 65kA@480V
  • Weight: 7.5 lb


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