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Square D MA368001121 - Molded Case 800A 600V 3-Pole

Square D
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Square D MA368001121 is a 3-pole, 800-amp molded case circuit breaker from the I-Line family, designed for overcurrent protection in commercial and industrial power distribution systems. It operates at a maximum voltage rating of 600V AC and provides a 30kA interrupting capacity at 480V, utilizing a thermal magnetic trip unit with LI (Long-Time and Instantaneous) functions for reliable fault clearing. The breaker features an I-Line style plug-in connection for easy installation into compatible panelboards and switchboards, housed in an M Frame construction weighing 38 lb. It is UL and CSA certified, meeting stringent safety and performance standards for electrical equipment. This circuit breaker is typically applied in main switchboards, distribution panels, and feeder circuits requiring robust protection for high-current loads.

Key Features & Specifications
  • Manufacturer: Square D
  • Item Subcategory: Molded Case
  • Family: I-Line
  • Type: MA
  • Weight: 38 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: 30kA@480V
  • Phase: 3
  • Current Rating: 800A
  • Amperage: 800 Amps
  • Voltage Rating: 600 Volts AC
  • Mounting Type: I-Line Plug-In
  • Interrupt Rating: 30kA at 480V
  • Frame/Series: MA (M Frame)
  • Trip Unit: Thermal Magnetic
  • Phase Connection: ABC
  • UL and CSA Certified


MA368001121