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Square D MA264001121 - Molded Case Circuit Breaker 400A 600V

Square D
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Square D MA264001121 is a 2-pole molded case circuit breaker designed for thermal magnetic protection in industrial power distribution systems. It is rated for 600V AC, 400A continuous current, with an interrupting capacity of 30kA at 480V, providing LI (Long-Time and Instantaneous) protection functions. The unit weighs 38 lb, features an M Frame size, and utilizes an I-Line style plug-in connection for secure panel mounting. It complies with applicable industry standards for molded case circuit breakers and is suitable for single-phase applications requiring reliable overcurrent protection. Typical industrial applications include main or feeder circuit protection in switchboards, panelboards, and motor control centers.

Key Features & Specifications
  • Type: Molded Case, Thermal Magnetic, I-Line Family
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Poles: 2
  • Connection: I-Line Style Plug-In
  • Protection: LI - Long-Time and Instantaneous
  • Frame Size: M Frame
  • AIC Rating: 30kA@480V
  • Phase: 1
  • Weight: 38 lb
  • Functions: Long-Time and Instantaneous
  • Item Subcategory: Molded Case
  • Type: MA


Product Identification
  • UPC: Not specified
  • GTIN: Not specified