The from the ATC Diversified Electronics division of Marsh Bellofram Corporation is a microprocessor based 3 phase monitor. This device protects 3 phase equipment from under voltage, over voltage, phase loss, phase reversal, phase unbalance, phase shift and frequency shift. Models available up to 690 vac and comes complete with automatic or manual reset, delay-on-make timer, LED indicators for fault conditions and last fault memory.
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