ICM 3-Phase Monitor

The ICM401 is a low cost 3-phase line monitor that protects against phase loss, phase reversal and phase unbalance. Ideally suited to protect scroll & screw compressors from reverse rotation. If all 3 phases are relatively equal and in proper sequence, the normally open contacts (Y/Y-OUT) will close when 24 volts is applied between C and Y terminals. If the phases are out of sequence, or if one is missing, the contacts will never close. If a phase is lost while the ICM401 is energized, the contacts will open immediately and will remain open until the error is corrected. An illuminated green LED indicates the output is energized, and an illuminated red LED indicates there is a fault and the output is de-energized.

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