Frequency Monitors

NAI's AC- and DC-powered Frequency Monitors are used for applications where electrical systems must be de-energized or alarm devices must be activated when the line frequency departs from acceptable operating limits. These monitors are specifically designed for rugged defense and industrial applications.

Click on the product links below for detailed product information.

ModelPowerInput ConfigurationVoltage (Operating)Frequency (Operating)Monitoring CharacteristicsContact FormPower DissipationInput Transients
FAA/FQAAC4-Wire Wye115 or 220Vrms50, 60 or 400HzFrequency BandDPDT or 3PDTNot AvailableMIL-STD-704