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Square D MXL36400 - Molded Case Circuit Breaker 400A 600V 3P

Square D
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Square D MXL36400 is a molded case circuit breaker designed for providing comprehensive overcurrent protection in three-phase industrial power distribution systems. It features a 400A current rating and a 600V voltage rating, housed within a robust enclosure measuring 8.27 in (210.06 mm) wide by 8.05 in (204.47 mm) deep by 12.86 in (326.64 mm) high and weighing 50 lb. This Micrologic family breaker utilizes solid-state protection with LSI (Long-Time, Short-Time, and Instantaneous) trip functions and offers a high interrupting capacity of 65kA at 480V. Its feed-thru connection and three-pole configuration make it suitable for protecting feeders, mains, and large branch circuits in commercial and industrial facilities.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Solid-State Protection, Micrologic MXL Family
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Dimensions: 8.27 in W x 8.05 in D x 12.86 in H (210.06 mm x 204.47 mm x 326.64 mm)
  • Weight: 50 lb
  • Standards: UL 489 Listed
  • Applications: Industrial & Commercial Power Distribution, Feeder & Main Protection
  • Switch Type: Circuit Breaker
  • Configuration: 3-Pole
  • Phase: 3
  • AIC Rating: 65kA @ 480V
  • Connection: Feed-Thru
  • Poles: 3
  • Protection: Solid State
  • Functions: LSI (Long-Time, Short-Time, Instantaneous)
  • Frame Size: MXL
  • Trip Type: Solid-State, Adjustable


Product Identification
  • Manufacturer Part Number: MXL36400