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  Products    Relays    Asymmetry Relays
Asymmetry Relays
Asymmetry relays indicate voltage asymmetries in three-phase systems that may result from an uneven load distribution or a phase failure.

Compare up to three products side by side:

SAD140
Asymmetry Relay for Three-Phase (4w) Systems
The SAD140 series monitors for asymmetry and phase failure in a three-phase AC system with neutral. External supply voltage is not required.
 Technical Specs                 Datasheet


SAD142
Asymmetry Relay for Three-Phase (4w) Systems
The SAD140 series monitors for asymmetry and phase failure in a three-phase AC system without neutral. External supply voltage is not required.
 Technical Specs                 Datasheet


AUR381Z
Asymmetry Relay for Three-Phase AC Systems
The AUR381Z series monitors for asymmetry, phase failure, and undervoltage in three-phase AC systems with neutral. Special input transformers attenuate interferences from the system. An integrated protective circuit is provided. An external supply voltage is not required.
 Technical Specs                 Datasheet


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