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Square D MEF436LS - Molded Case Circuit Breaker 400A 600V 3-Pole

Square D
Price
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Square D MEF436LS is a 3-pole molded case circuit breaker from the Pre-Micrologic family, designed for industrial power distribution with solid-state LS (Long-Time and Short-Time) protection. It is rated for 400A at 600VAC and provides an interrupting capacity of 100kA at 480VAC, utilizing a bolt-on connection for secure installation. The unit weighs 75 lb and does not include lugs, requiring separate selection based on wiring specifications. It features a Micrologic Series B full-function trip unit with adjustable protection parameters and is UL Listed and CSA Certified for compliance. This breaker is suited for demanding electrical systems requiring coordinated overcurrent protection in manufacturing, commercial, and utility applications.

Key Features & Specifications
  • Type: Molded Case
  • Family: Pre-Micrologic
  • Functions: LS - Long-Time and Short-Time
  • Current Rating: 400 Amp
  • Voltage Rating: 600 VAC
  • Poles: 3 Pole
  • Connection: Bolt-On
  • Protection: Solid State
  • AIC rating: 100kA@480V
  • Phase: 3
  • Weight: 75 lb
  • Trip Unit: Micrologic Series B Full-Function
  • Protection Type: Long-Time Instantaneous
  • Interrupt Rating: Extra High Interrupt
  • Mounting: Terminal Pads
  • Frame Size: 400 Amp Frame
  • UL Listed and CSA Certified