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Square D LA26300AC - Molded Case Circuit Breaker 300A 600V

Square D
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Square D LA26300AC is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in industrial power distribution systems. It features a 300A current rating and a 600V AC voltage rating, housed within a compact 400A/LA frame measuring 279.4 mm H x 152.4 mm W x 148.34 mm D and weighing 16.27 lb. The breaker is CSA Certified and UL Listed, ensuring compliance with North American safety standards for use in I-Line panelboards. Its thermal-magnetic protection with long-time and instantaneous (LI) tripping functions makes it suitable for safeguarding feeders and branch circuits in commercial and industrial facilities.

Key Features & Specifications
  • Type: Standard molded case circuit breaker with thermal-magnetic protection and long-time/instantaneous (LI) trip functions
  • Voltage Rating: 600V AC
  • Current Rating: 300A
  • Dimensions: 279.4 mm H x 152.4 mm W x 148.34 mm D (11 in x 6 in x 5.84 in)
  • Standards: CSA Certified, UL Listed
  • Applications: Industrial power distribution, feeder and branch circuit protection in I-Line panelboards
  • Switch Type: Circuit Breaker
  • Configuration: Plug-In
  • Phase: 1
  • Poles: 2
  • AIC Rating: 30kA at 480V
  • Connection: Plug In Panelboard
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: 400A/LA
  • Panel Type: I Line Panelboards
  • Breaker Type: Standard
  • Phase Connection: AC
  • Terminal Connection: Lug
  • Wire Size: Accepts 1 AWG to 600 kcmil (copper) or 1 AWG to 250 kcmil (aluminium)
  • MCM Size: Min. 1 AWG (Al), Max. 250 MCM (Al), 600 MCM (Cu)
  • Weight: 16.27 lb
  • Country of Origin: Mexico
  • Family: I-Line


Product Identification
  • UPC: 785901009771
  • GTIN: 00785901009771