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MH36300CBA

Square D
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Square D MH36300CBA is a 3-pole I-Line style plug-in molded case circuit breaker from the M Frame family, designed to provide thermal magnetic protection for commercial and industrial power distribution systems. It is rated for 300A at 600V AC and delivers a 65kA interrupting capacity at 480V, with a Long-Time and Instantaneous (LI) trip function to safeguard against overloads and short circuits. The unit weighs 40 lb and features a plug-in connection for straightforward installation in compatible I-Line panelboards. This breaker complies with industry standards for robust performance in demanding electrical environments. Typical applications include protecting feeders and branch circuits in industrial plants, commercial buildings, and other high-power distribution networks.

Key Features & Specifications
  • Manufacturer: Square D
  • Item Subcategory: Molded Case
  • Family: I-Line
  • Type: MH
  • Weight: 40 lb
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: M Frame
  • Voltage Rating: 600V
  • Poles: 3
  • Connection: I-Line Style Plug-In
  • Protection: Thermal Magnetic
  • AIC rating: 65kA@480V
  • Phase: 3
  • Current Rating: 300A


Square D MH36300CBA - Molded Case 300A 3-Pole Breaker