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Siemens Mains Voltage Monitoring Relays Siemens 3UG4615 1CR20, This relay functions as a mains voltage monitoring relay, helping to provide optimum protection for machinery and equipment from a variety of electrical faults. The relay can be used without auxiliary voltage within the measured voltage range worldwide thanks to a wide voltage range. Typical applications include mobile equipment, e.g. air conditioning compressors, refrigerating containers, building site compressors and cranes, etc.This relay monitors undervoltage, overvoltage, phase sequence recognition, phase failure detection, phase unbalance, overvoltage detection 3 phase, undervoltage detection 3 phase, voltage window recognition 3 phase. The relay also has an adjustable openclosed circuit current principle. Siemens 3UG4615 1CR20 Mains Voltage Monitoring Relay 2x SPDT CO Digital
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