Latest articles on EFR-4 EFR-5 Earth Leakage Protection Relay 
FDB announces EFR-4 EFR-5 universal earth leakage protection relay(03/08/2010)
The EFR-4/EFR-5 Earth Leakage Protection Relay from FDB Electrical forms part of their Optima range of low cost, high specification RCDs and can be specified at a wide range of trip levels and response times for precise system protection. The EFR-4/EFR-5 is designed for medium to high current applications where space is a limitation. It is housed in a compact Din-rail mounting enclosure complete with integral 28 or 46mm C.T. sensory coil and fitted with test, reset buttons and LED status ind... [more]
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