Self-powered feeder protection ABB REJ603 numerical relays are entry-level protection in secondary distribution networks. ABB REJ603 devices are developed for selective short-circuit & earth-fault protection of feeders as well as for the protection of small transformers in industries & utilities.

2. ABB SELF-POWERED FEEDER
PROTECTION REJ603 NUMERICAL RELAY
● Self-powered feeder protection ABB REJ603 numerical relays
are entry-level protection in secondary distribution networks.
● ABB REJ603 devices are developed for selective short-circuit
& earth-fault protection of feeders as well as for the protection
of small transformers in industries & utilities.
● REJ603 is a current-transformer-powered numerical feeder
protection device for applications where auxiliary power is not
available.
www.dsgenterprisesltd.com 91-7021624024
marketing@dsgenterprises.in

3. ABB SELF-POWERED FEEDER
PROTECTION REJ603 NUMERICAL RELAY
● An ideal choice for installation at remote locations.
● These relays are primarily used in ring main units as well as
secondary distribution switchgear.
● Both 1.5 & 3.0 variants support special & co
www.dsgenterprisesltd.com 91-7021624024
marketing@dsgenterprises.in

4. Product benefits
● High suitability of operation with low-energy trip coils.
● Hand-reset electromechanical flag (Built-in).
● Fault analysis with event log & disturbance record facility (3.0
variant).
● Extensive self-supervision of relay hardware & software.
www.dsgenterprisesltd.com 91-7021624024
marketing@dsgenterprises.in

5. Key features
● Used in cable and transformer feeders in resistance-earthed, solidly earthed & isolated networks
where auxiliary powers are not available or they cannot be guaranteed.
● Non-directional overcurrent, inrush current detection, earth-fault protection, thermal overload
protection, remote trip & measurements.
● Low-energy trip output as well as bi-stable outputs to trip the circuit breaker.
● Built for Ring Main Unit (RMU) & compact switchgear.
www.dsgenterprisesltd.com 91-7021624024
marketing@dsgenterprises.in