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Square D MEF436LSG - 400A 3-Pole Molded Case Breaker (600V, LSIG)

Square D
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Square D MEF436LSG is a 3-pole, 400A molded case circuit breaker from the Pre-Micrologic family, designed for solid-state LSIG (Long-Time, Short-Time, Instantaneous and Ground Fault) protection in industrial power distribution systems. It operates at 600V with a high interrupting capacity of 100kA at 480V, utilizing a bolt-on connection for secure installation. This unit weighs 75 lb and does not include lugs; for lug specifications, consult a sales representative with wiring details. It complies with industry standards for robust overcurrent and ground fault protection in three-phase applications. Typical uses include main or feeder protection in switchboards, panelboards, and motor control centers requiring precise, adjustable trip settings.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Solid State Trip, LSIG Protection
  • Voltage Rating: 600V
  • Current Rating: 400A
  • Poles: 3
  • Phase: 3
  • Connection: Bolt-On
  • Protection: Solid State (LSIG - Long-Time, Short-Time, Instantaneous and Ground Fault)
  • AIC Rating: 100kA@480V
  • Family: Pre-Micrologic
  • Weight: 75 lb
  • Additional Info: Lugs not included


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