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Square D LLA36400U33X - Molded Case Circuit Breaker 400A 600V 3P

Square D
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Square D LLA36400U33X is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in industrial power distribution systems. It features a 400A current rating and a 600V voltage rating, housed within a compact L-frame measuring 340 mm x 140 mm x 110 mm (H x W x D) and weighing 19.141 lb. The breaker utilizes solid-state protection with long-time, short-time, and instantaneous trip functions and is constructed for I-Line style plug-in connection. It complies with UL, CSA, NEMA, NOM-003-SCFI-2000, and IEC 60947-2 standards, ensuring suitability for three-phase applications in commercial and industrial facilities such as panelboards and switchboards.

Key Features & Specifications
  • Type: LLA Molded Case Circuit Breaker with Solid-State Protection
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Dimensions: 13.4 in (340 mm) x 5.5 in (140 mm) x 4.3 in (110 mm) (H x W x D)
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Applications: Industrial power distribution, panelboards, switchboards
  • Switch Type: Circuit Breaker
  • Configuration: Plug-In
  • Temp Rating: 28-158 °F (-2-70 °C)
  • Phase: 3
  • AIC rating: 100kA @ 480V
  • Connection: I-Line Style Plug-In
  • Poles: 3
  • Protection: Solid State Trip Unit
  • Functions: Long Time, Short Time, Instantaneous Trip
  • Frame Size: L Frame
  • Wire Size: AWG 3/0...500 kcmil (aluminium/copper)
  • Certification: UL, CSA, NOM
  • Family: Powerpact
  • Country of Origin: Mexico


Product Identification
  • UPC: 785901808725
  • GTIN: 00785901808725