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MA36300CBA

Square D
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Save $-3,884.82
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Square D MA36300CBA is a 300 Amp, 3-pole molded case circuit breaker from the I-Line family, designed for overcurrent protection in industrial and commercial power distribution systems. It provides Long-Time and Instantaneous (LI) protection functions via a thermal magnetic trip mechanism, rated for 600V AC with a 30kA interrupting capacity at 480V AC. The unit features an M Frame size, weighs 38 lb, and utilizes an I-Line style plug-in connection for secure mounting in compatible panelboards. This breaker complies with industry standards for high-interrupting applications, ensuring reliable fault clearing in three-phase electrical systems. It is typically applied in main or feeder circuits within manufacturing facilities, data centers, and large commercial buildings.

Key Features & Specifications
  • Manufacturer: Square D
  • Type: MA Molded Case Circuit Breaker
  • Amperage: 300 Amps
  • Voltage Rating: 600 Volts AC
  • Poles: 3
  • Mounting Style: I-Line Plug-In
  • Interrupt Rating: 30kA at 480V
  • Frame/Series: MA
  • Item Subcategory: Molded Case
  • Family: I-Line
  • Weight: 38 lb
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: M Frame
  • Connection: I-Line Style Plug-In
  • Protection: Thermal Magnetic
  • Phase: 3


Square D MA36300CBA - Molded Case Circuit Breaker 300A