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Square D LA36400MB - Molded Case Circuit Breaker 400A 600V 3-Pole

Square D
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Square D LA36400MB 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 provides LI (Long-Time and Instantaneous) protection functions through thermal-magnetic operation. This L Frame breaker weighs 20 lb, features an I-Line style plug-in connection, and is part of the I-Line family for panelboard integration. It complies with industry standards and carries a 30kA interrupting capacity at 480V for 3-phase systems. Typical applications include main or feeder protection in commercial and industrial electrical panels.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, I-Line Family, LA Type
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Poles: 3
  • Phase: 3
  • Connection: I-Line Style Plug-In
  • Protection: Thermal Magnetic (LI - Long-Time and Instantaneous)
  • AIC Rating: 30kA@480V
  • Frame Size: L Frame
  • Weight: 20 lb
  • Functions: LI - Long-Time and Instantaneous
  • Item Subcategory: Molded Case


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