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Square D HJA260503 - PowerPact H 50A 2-Pole Circuit Breaker (600V)

Square D
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Square D HJA260503 is a PowerPact H series molded case circuit breaker from Schneider Electric, designed for overcurrent protection in industrial electrical systems. This 50A, 2-pole thermal magnetic breaker provides LI (Long-Time and Instantaneous) protection functions and operates at a maximum voltage rating of 600VAC with an interrupting capacity of 65kA at 480VAC. The unit measures 6.4 in (163 mm) in height, 4.09 in (104 mm) in width, and 3.4 in (86 mm) in depth, weighing 3.999 lb, and features an I-Line style plug-in connection for panelboard mounting. It complies with UL, CSA, NEMA, NOM-003-SCFI-2000, and IEC 60947-2 standards, with certifications from UL, CSA, and NOM. Typical applications include branch circuit protection in commercial and industrial power distribution systems requiring reliable thermal-magnetic trip characteristics.

Key Features & Specifications
  • Manufacturer: Schneider Electric
  • Item Subcategory: Molded Case
  • Family: Powerpact
  • Country of Origin: United States
  • Type: HJA
  • Dimensions: 6.4 in (163 mm) x 4.09 in (104 mm) x 3.4 in (86 mm) (Height x Width x Depth)
  • Weight: 3.999 lb
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 600V
  • Poles: 2
  • Connection: I-Line Style Plug-In
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Protection: Thermal Magnetic
  • Wire Size: AWG 14...AWG 3/0 aluminium/copper terminal
  • Certification: UL, CSA, NOM
  • AIC rating: 65kA@480V
  • Phase: 1
  • Temp Rating: 28-158 °F (-2-70 °C)
  • Current Rating: 50A
  • Interrupt Rating: 25kA at 600VAC
  • Mounting Type: I-Line
  • Trip Unit: Thermal Magnetic, 80% rated