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Square D MEF36400LI - Molded Case 400A 600V 3-Pole Breaker

Square D
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Square D MEF36400LI is a 3-pole molded case circuit breaker designed for overcurrent protection in industrial power distribution systems. It carries a 400A current rating and a voltage rating of 600V, with an interrupting capacity of 65kA at 480V. The unit features a bolt-on connection, weighs 50 lb, and utilizes thermal-magnetic protection with LI (Long-Time and Instantaneous) trip functions. This breaker complies with industry standards for robust performance in demanding environments. It is typically applied in commercial and industrial panelboards and switchboards for feeder and main circuit protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Voltage Rating: 600V
  • Current Rating: 400A
  • Poles: 3
  • Phase: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC Rating: 65kA@480V
  • Functions: LI - Long-Time and Instantaneous
  • Weight: 50 lb
  • Additional Info: This item does not include Lugs. If you would like lugs please reach out to a sales rep with wiring specs and we can help you with the lugs part number.


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