Under voltage, Phase failure and Phase loss  relays  
Detection of under voltage, phase failure and phase loss conditions in three phase AC systems. Bender AUR381 ...  relays cover a wide variety of systems to be monitored up to 690VAC and incorporate easily accessible potentiometers for adjustable alarm set points. 
Please refer to the table below to determine which current relay is suited for your application.
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Left mouse click on type (table) or flag symbol for datasheet in pdf. format

BENDER System Adjust. Hz  Adjust. Adjust. Article #
Type Voltage Un V range range time hyst.  
           
Under voltage & Phase failure & Phase loss 3Ph AC  
AUR381Z 3AC208V 0.7-0.95 Un 50-60Hz 0.5-5 - B935 ...
AUR381Z 3AC230V 0.7-0.95 Un 50-60Hz 0.5-5 - B935 ...
AUR381Z 3AC400V 0.7-0.95 Un 50-60Hz 0.5-5 - B935631
AUR381Z 3AC440V 0.7-0.95 Un 50-60Hz 0.5-5 - B935630
AUR381Z 3AC660V 0.7-0.95 Un 50-60Hz 0.5-5 - B935003
AUR381Z 3AC690V 0.7-0.95 Un 50-60Hz 0.5-5 - B935068
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Please contact us at (800) 356-4266 or Fax. (610) 383-7100 for technical assistance or sales support. e-mail: info@benderrelay.com
Bender Inc. 700 Fox Chase, Coatesville, PA 19320

current relays - voltage relays - phase failure relays - phase loss relays - frequency relays