ABB Feeder Protection and Control Type REF601

REF601/REJ601 is a dedicated feeder protection relay, intended for the protection of utility substations and industrial power systems, in primary and secondary distribution networks. REF601/REJ601 is a member of ABB’s Relion® product family and part of its 605 series.
The relay provides an optimized composition of protection, monitoring and control functionality in one unit, with the best performance usability in its class and are based on ABB’s in-depth knowledge of protection and numerical technology.