The problem of course is to eliminate nuisance tripping from induced currents which would activate a cut-off in normal equipment. Fortunately for K H Engineering Services, the FDB 11 from FDB Electrical is a proven DC immune solution to this problem and on the DC approved list which makes it suitable for use on the Southern Line and other lines from North London to Kent and through to Portsmouth where they are recognised electrical maintainers.
Qualifying Supervisor Tony Mace explained: “We have found the FDB 11 units excellent for all our installation work, whether it be renovation or new build. We have always found the sales team at FDB to be efficient, timely, very competitive and always helpful.”
“The FDB 11 has proven itself extremely reliable and flexible since we can readily obtain it in a range of standard ratings which suit our need for 16A or 32A current capacity with 30mA trip DC immune RCDs. When required we can also get them in multiple housings.”