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The M200-PS1 provides phase and sequence phase failure protection. Used to ensure the sequence is correct when connecting 3 phase loads. With an incorrect phase sequence the relay will de- energize preventing the starting of incorrectly connected machinery.The relay wilt also trip if there is a phase loss and can therefore be used as a phase failure relay. Note if regenerated voltage is present in the open phase the M200-PB1 or M200-PB2 should be used. The red LED "ON" indicates phase sequence incorrect and relay is de-energized.The green LED "ON" indicates phase sequence correct and relay is energized.
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