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Square D MX36400 - Molded Case Circuit Breaker 400A 600V

Square D
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Square D MX36400 is a 400 Amp, 600 Volt, 3 Pole I-Line molded case circuit breaker designed for overcurrent protection in three-phase electrical systems. It features a solid-state electronic trip unit with LSI (Long-Time, Short-Time and Instantaneous) protection functions and a 65kA interrupting rating at 480V. The breaker uses an I-Line style plug-in connection and measures 12.86 inches in height, 8.27 inches in width, and 8.05 inches in depth, weighing 50 lb. It is part of the Square D I-Line family and complies with industry standards for molded case circuit breakers. This unit is suitable for industrial and commercial applications requiring reliable circuit protection in distribution panels and switchboards.

Key Features & Specifications
  • Type: Molded Case
  • Family: I-Line
  • Type: MX
  • Dimensions: Depth 8.05 in (204.47 mm) Width 8.27 in (210.06 mm) Height 12.86 in (326.64 mm)
  • Weight: 50 lb
  • Functions: LSI - Long-Time, Short-Time and Instantaneous
  • Voltage Rating: 600V
  • Poles: 3
  • Connection: I-Line Style Plug-In
  • Protection: Solid State
  • AIC rating: 65kA@480V
  • Phase: 3
  • Current Rating: 400A
  • Amperage: 400 Amp
  • Interrupt Rating: 65kA at 480V
  • Mounting Type: I-Line Plug-In
  • Series/Frame: I-Line
  • Trip Unit: Electronic