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Square D LA26400BC - 400A 2-Pole Molded Case Circuit Breaker (600V, I-Line)

Square D
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Square D LA26400BC is a 2-pole, 400A molded case circuit breaker from the I-Line family, designed for thermal-magnetic protection in power distribution systems. It operates at 600VAC with a 30kA interrupting capacity at 480V, providing LI (Long-Time and Instantaneous) protection functions. The unit measures 11 in (279.4 mm) x 6 in (152.4 mm) x 5.84 in (148.34 mm) and weighs 15.85 lb, featuring an I-Line style plug-in connection with lug terminals. This breaker is CSA Certified and UL Listed, complying with industry safety standards for industrial environments. It is typically used in I-Line panelboards for single-phase, BC phase connection applications, accommodating wire sizes from 1 AWG to 600 kcmil (copper) or 250 kcmil (aluminum).

Key Features & Specifications
  • Type: Molded Case, Standard Breaker, Thermal Magnetic Protection
  • Voltage Rating: 600V
  • Current Rating: 400A
  • Dimensions: 11 in (279.4 mm) x 6 in (152.4 mm) x 5.84 in (148.34 mm) (Height x Width x Depth)
  • Standards: CSA Certified, UL Listed
  • Applications: I-Line Panelboards, Power Distribution
  • Poles: 2
  • Phase: 1
  • Phase Connection: BC
  • AIC Rating: 30kA@480V
  • Connection: I-Line Style Plug-In
  • Terminal Connection: Lug
  • Wire Size: AWG 1...600 kcmil (Cu), AWG 1...250 kcmil (Al)
  • MCM Size: Min. 1 AWG (Al), Max. 250 MCM (Al), 600 MCM (Cu)
  • Frame Size: 400A/LA
  • Functions: LI - Long-Time and Instantaneous
  • Panel Type: I Line Panelboards
  • Breaker Type: Standard
  • Weight: 15.85 lb
  • Country of Origin: Mexico


Product Identification
  • UPC: 078590135847
  • GTIN: 00785901358473