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The new 3UG4 line monitoring relays permit a maximum degree of protection to be achieved for machines, plants and systems. This means that line and voltage faults can be detected early on and the appropriate response is initiated before far more significant subsequent damage can occur.. Thanks to the wide voltage range, it can be used on all line supplies around the world – from 160 V to 690 V – without an auxiliary voltage. Can be variably set to above range, below range or window monitoring. Freely parameterizable delay times and reset behavior. Reduced width for all versions for line and voltage monitoring. For the digital versions, the actual value and fault type are permanently displayed. Automatic direction of rotation correction by differentiating between line faults and incorrect phase sequence. All versions have removable terminals. All versions have either screw terminals or alternatively innovative Cage Clamp terminals
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