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Square D MX36450 - Molded Case Circuit Breaker 450A 600V

Square D
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Square D MX36450 is a 450A, 600V, 3-pole molded case circuit breaker from the I-Line family, designed for primary protection in power distribution systems using a solid-state trip unit with LSI (Long-Time, Short-Time and Instantaneous) functions. It operates at 600V AC with a high interrupting capacity of 65kA at 480V, suitable for three-phase applications. The breaker features an I-Line style plug-in connection and measures 8.05 inches in depth, 8.27 inches in width, and 12.86 inches in height, with a weight of 50 lb. Built on the MH frame, it complies with industry standards for robust overcurrent protection. This circuit breaker is typically applied in industrial settings requiring reliable, adjustable protection for feeders and main service entrances.

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: 450A
  • Amperage: 450A
  • Voltage Rating: 600V AC
  • Poles: 3
  • Frame Type: MH
  • Interrupting Capacity: 65kA at 480V
  • Trip Unit: Thermal Magnetic with Long Time and Instantaneous functions
  • Mounting Type: I-Line Style Plug-In
  • Phase: 3 Phase