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Square D HJA260404AABCSJ - Molded Case Breaker 40A 600V

Square D
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Square D HJA260404AABCSJ is a molded case circuit breaker designed for thermal magnetic overcurrent protection in industrial power distribution systems. This 2-pole, 40A unit is rated for 600VAC and provides LI (Long-Time and Instantaneous) trip functions to safeguard electrical circuits from sustained overloads and short circuits. The breaker features an I-Line style plug-in connection for secure mounting in compatible panelboards, weighs 7.5 lb, and delivers a high interrupting capacity of 65kA at 480V for robust fault clearing. It complies with UL and NEMA standards for molded case circuit breakers, ensuring reliable performance in demanding environments. Typical applications include branch circuit protection in commercial and industrial facilities, motor control centers, and distribution panels requiring single-phase or three-phase configurations.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic, LI (Long-Time and Instantaneous) Trip Functions
  • Voltage Rating: 600VAC
  • Current Rating: 40A
  • Poles: 2
  • Connection: I-Line Style Plug-In
  • AIC Rating: 65kA@480V
  • Phase: 1
  • Weight: 7.5 lb
  • Standards: UL, NEMA
  • Applications: Branch circuit protection, motor control centers, distribution panels


Product Identification
  • UPC: Not available
  • GTIN: Not available