The VEF4/VEF5 forms part of the extensive OPTIMA range of low cost, high specification RCD's, USER ADJUSTABLE to a wide range of trip levels and response times for precise system protection.

The VEF4/VEF5 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 28mm or 46mm C.T. and fitted test, reset buttons and LED status indication.