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MJL36400SKLU

Square D
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Square D MJL36400SKLU is a 3-pole molded case circuit breaker from the PowerPact M Frame family, designed for overcurrent protection in industrial power distribution systems. It is rated for 400A at 600VAC, with a 65kA interrupting capacity at 480V, and utilizes solid-state LI (Long-Time and Instantaneous) trip protection. The unit measures 12.86 inches in height, 8.27 inches in width, and 8.05 inches in depth, weighs 29 lb, and features a feed-thru connection with chassis mounting. It complies with UL 489, UL 480, CSA, NMX, and IEC certifications, and is manufactured in the United States by Schneider Electric. This circuit breaker is suited for main lug panelboard terminations in commercial and industrial applications requiring reliable 3-phase protection.

Key Features & Specifications
  • Manufacturer: Schneider Electric
  • Item Subcategory: Molded Case
  • Family: Powerpact
  • Country of Origin: United States
  • Type: MJL
  • Dimensions: Depth 8.05 in (204.47 mm) Width 8.27 in (210.06 mm) Height 12.86 in (326.64 mm)
  • Weight: 29 lb
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: M Frame
  • Voltage Rating: 600V
  • Poles: 3
  • Connection: Feed-Thru
  • Protection: Solid State
  • AIC rating: 65kA@480V
  • Phase: 3
  • Current Rating: 400A
  • Amperage: 400A
  • Voltage Rating: 600 VAC
  • Interrupt Rating: 65kA at 480V
  • Mounting Type: Chassis Mount
  • Certifications: UL 489, UL 480, CSA, NMX, IEC
  • Style: Molded Case Circuit Breaker
  • Standard 80% rating


Square D MJL36400SKLU - Molded Case 400A 600V 3-Pole