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Earth-fault relayOutdated product, replaced by REF610
Combined overcurrent & earth-fault relayOutdated product, replaced by REF610
Overcurrent & earth-fault relay Earth-fault relay for selective earth-fault protection, either primary or back-up, in solidly or low-resistance earthed systems Outdated product, replaced by SPAJ 140 C
Overcurrent & earth-fault relay Combined restricted earth-fault & residual earth-fault relay for power generator, motor and transformer protectionOutdated product, replaced by SPAJ 140 C
Directional Earth Fault Relay Directional phase overcurrent, directional short-circuit & directional earth-fault protectionOutdated product, replaced by REX 521
Overcurrent relayOutdated product, replaced by REF610
Directional or non-directional earth-fault relay and zero-sequence voltage unitOutdated product, replaced by REF610
Overcurrent & earth-fault relay Sensitive earth-fault relay for neutral current measuring, generator interturn fault, capacitor bank unbalance & rotor earth-fault protectionOutdated product, replaced by SPAJ 140 C
Directional Earth Fault Relay Selective feeder protection in isolated neutral & impedance earthed networksOutdated product, replaced by SPAA 341 C