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Square D MA364001021 - Molded Case Circuit Breaker 400A 600V

Square D
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Square D MA364001021 is a 3-pole molded case circuit breaker designed for overcurrent protection in industrial power distribution systems. It is rated for 600V AC, 400A continuous current, and features a 30kA interrupting capacity at 480V AC. The unit weighs 38 lb and utilizes an I-Line style plug-in connection with a thermal magnetic trip mechanism for LI (Long-Time and Instantaneous) protection within an M Frame size. This breaker complies with applicable industry standards for molded case circuit breakers and is suitable for use in switchboards and panelboards requiring 3-phase protection. It is commonly applied in manufacturing facilities, commercial buildings, and heavy industrial environments where reliable circuit interruption is critical.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, I-Line Family, MA Type
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Poles: 3
  • Phase: 3
  • Connection: I-Line Style Plug-In
  • Protection: Thermal Magnetic
  • AIC Rating: 30kA@480V
  • Frame Size: M Frame
  • Functions: LI - Long-Time and Instantaneous
  • Additional Info: Complete with 120V shunt trip
  • Weight: 38 lb


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