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Square D MH36450 - Molded Case Circuit Breaker 450A 600V 3P

Square D
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Square D MH36450 is a molded case circuit breaker designed for providing reliable overcurrent protection in three-phase industrial power distribution systems. It features a 600V AC voltage rating and a 450A current rating, housed within a compact M-frame design measuring 8.27 in (210.06 mm) wide, 8.05 in (204.47 mm) deep, and 12.86 in (326.64 mm) high with a weight of 40 lb. The breaker utilizes a thermal-magnetic trip unit with long-time and instantaneous (LI) functions to ensure protection against both overloads and short circuits, achieving an interrupting capacity of 65kA at 480V. Its I-Line style plug-in connection facilitates straightforward installation and integration into compatible panelboards, making it suitable for a wide range of commercial and industrial applications requiring robust circuit protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, I-Line Plug-In
  • Voltage Rating: 600V AC
  • Current Rating: 450A
  • 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: 40 lb
  • Frame Size: M Frame
  • Poles: 3
  • Phase: 3
  • Connection: I-Line Style Plug-In
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • AIC Rating: 65kA @ 480V
  • Family: I-Line
  • Item Subcategory: Molded Case