Installation of the ICM493 single-phase line voltage monitor


The ICM493 is an advanced, single-phase line voltage monitor with a bank of surge arresters for added protection against lightning strikes. Includes a built-in 40A contactor. Housed in a NEMA Rated 3R enclosure for outdoor installations. UL Recognized. Installs easily between the service disconnect and the condensing unit. Ideal for Mini-Splits or other valuable, single-phase equipment.

  • Protects against over and under voltage, rapid short cycling caused by transients, and high-power surges
  • Ideal for inverters, mini-splits, and other condensing units
  • Easy to view, backlit digital display
  • Bank of five L-L Surge Arresters
  • Built-in 40A Contactor
  • Waterproof, NEMA–rated 3R enclosure for outdoor use
  • Easy installation and setup


Learn more about the 40A model here

Learn more about the 60A model here

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