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Square D MXL36450 - Molded Case 450A 600V 3-Pole Breaker

Square D
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Square D MXL36450 is a three-pole molded case circuit breaker from the Micrologic family, designed to provide solid-state overcurrent protection for industrial and commercial power distribution systems. It is rated for 450 amps at 600 volts AC, with an interrupting capacity of 65kA at 480V, and features LSI (Long-Time, Short-Time, and Instantaneous) trip functions for precise coordination. The unit measures 12.86 inches in height, 8.27 inches in width, and 8.05 inches in depth, weighs 50 lb, and uses feed-thru connections with box lug terminals for panel mount installation. This breaker complies with industry standards for high-amperage feeder circuits and main distribution panels in demanding electrical environments. Typical applications include protecting branch circuits and main switchboards in manufacturing facilities, data centers, and large commercial buildings.

Key Features & Specifications
  • Manufacturer: Square D
  • Item Subcategory: Molded Case
  • Family: Micrologic
  • Type: MXL
  • 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: Feed-Thru
  • Protection: Solid State
  • AIC rating: 65kA@480V
  • Phase: 3
  • Current Rating: 450A
  • Amperage: 450 Amp
  • Tripping Mechanism: Electronic
  • Terminal Connection: Box Lugs
  • Mounting: Panel Mount