Select your country/region in the menu or by clicking on the world map *
Country Selector Alternate Image

Insulated Case Circuit Breakers -  Micrologic Trip Units

Square D



The new Micrologic® trip units make adding functionality, literally, a snap. They plug directly into Masterpact® NW/NT power circuit breakers and can be installed easily on site. This family of trip units includes four models with varying levels of functionality:

  • Micrologic 3.0 and 5.0 -- basic overcurrent protection including long-time, instantaneous and optional short-time adjustments for overloads and short circuits.
  • Micrologic 3.0A and 5.0A and 6.0A -- long-time, instantaneous and optional short-time adjustments, integrated ammeter and phase loading bar graph, LED trip indicator, zone selective interlocking with downstream breakers, optional ground-fault protection, optional Modbus® communication interface.
  • Micrologic 5.0P and 6.0P -- long-time, instantaneous and short-time adjustments, advanced relay functions, inverse definite minimum time lag (Idmtl) long-time delay curve shaping for improved coordination, basic power monitoring and metering functions, standard Modbus communication interface compatible with PowerLogic® product installations, GF alarm standard, 6.0P adds ground-fault protection for equipment.
  • Micrologic 5.0H and 6.0H -- includes all 5.0P and 6.0P functions, enhanced monitoring and metering capabilities, basic power quality (harmonic) measurement, waveform capture.
To know more

To learn more about 

  • Overview
    • Description
  • Downloads
    • Documents
  • Support
    • Contact Us