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Square D MXL36450G - Molded Case Breaker 450A 600V 3-Pole

Square D
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Square D MXL36450G is a 3-pole molded case circuit breaker from the Micrologic family, designed to provide LSIG protection—long-time, short-time, instantaneous, and ground fault—for industrial power systems. It is rated for 450A at 600VAC with an interrupting capacity of 65kA at 480V, ensuring robust fault current interruption. The unit features solid-state protection, a feed-thru connection, and a bolt-on mounting style, with dimensions of 12.86 in height, 8.27 in width, and 8.05 in depth, weighing 50 lb. It is UL listed and certified for use in panelboards and switchboards, complying with industry safety standards. This breaker is typically applied in commercial and industrial electrical distribution systems requiring precise, adjustable trip settings for overload, short circuit, and ground fault conditions.

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: LSIG - Long-Time, Short-Time, Instantaneous and Ground Fault
  • Voltage Rating: 600 VAC
  • Poles: 3
  • Connection: Feed-Thru
  • Protection: Solid State
  • AIC rating: 65kA at 480V
  • Phase: 3
  • Current Rating: 450 Amps
  • Mounting Type: Bolt-On
  • Interrupt Rating: 30kAIC at 480V
  • Trip Unit: Thermal Magnetic with Long Time, Short Time, Instantaneous
  • Series/Frame: MA Series
  • Certifications: UL Listed


Part Number: MXL36450G