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Square D LDA36400U44X - Molded Case Circuit Breaker 400A 600V 3-Pole

Square D
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Schneider Electric Square D LDA36400U44X is a Powerpact L Series molded case circuit breaker designed for overcurrent and ground fault protection in industrial and commercial power distribution systems. This 3-pole, 400A unit operates at a maximum voltage of 600V with an interrupting rating of 18kA at 480V, utilizing a solid-state LSIG trip unit for long-time, short-time, instantaneous, and ground fault protection. The breaker features an L Frame size, I-Line style plug-in connection with lug terminals, measures 13.4 in (340 mm) x 5.5 in (140 mm) x 4.3 in (110 mm), and weighs 17 lb, accepting wire sizes from AWG 3/0 to 500 kcmil aluminum or copper. It complies with UL, CSA, NEMA, NOM-003-SCFI-2000, and IEC 60947-2 standards, and is certified by UL, CSA, and NOM, with an operating temperature range of 28-158 °F (-2-70 °C). Typical applications include main or feeder protection in switchboards, panelboards, and industrial control panels requiring reliable, high-capacity circuit interruption.

Key Features & Specifications
  • Manufacturer: Schneider Electric
  • Item Subcategory: Molded Case
  • Family: Powerpact
  • Type: LDA
  • Frame Size: L Frame
  • Current Rating: 400A
  • Poles: 3
  • Voltage Rating: 600V
  • Interrupt Rating: 18kA @ 480V
  • Protection: Solid State
  • Functions: LSIG - Long-Time, Short-Time, Instantaneous and Ground Fault
  • Connection: I-Line Style Plug-In
  • Terminal Connection: I-Line, Lug
  • Wire Size: AWG 3/0...500 kcmil aluminium/copper
  • Phase: 3
  • Dimensions: 13.4 in (340 mm) x 5.5 in (140 mm) x 4.3 in (110 mm) (Height x Width x Depth)
  • Weight: 17 lb
  • Temp Rating: 28-158 °F (-2-70 °C)
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Certification: UL, CSA, NOM
  • Country of Origin: United States


Product Identification
  • UPC: 060648628372
  • GTIN: 03606486283721