VEF 21, VEF41 and VEF 51 are Variable Earth Leakage Protection Relays available for urgent delivery from our Online store with choice of operating voltages 24V or 240V AC/DC plus time delay and EF adjustment – they include integral test and reset buttons. Also available are matching core balance transformers.
Other Earth Leakage Relays are available at out FDB Electrical site – for details see here – also please contact us for order information.
For more than 50 years, FDB Electrical has been one of the leading specialists in the field of electrical protection and have an enviable reputation for quality, innovation and service. Our product range includes RCD’s and RCBO’s for personnel or plant protection, Earth Continuity Monitors, RCD Test Sets together with a range of ancillary devices supplied separately as panel mounting components, or pre-assembled within steel, stainless steel or GRP enclosures complete with socket outlets or terminals as required.
Protective devices available from FDB include fully adjustable multi-function RCD’s, variable earth leakage relays, percentage earth fault relays together with a range of external toroidal CT’s up to 240mm diameter. Custom built panels and bespoke solutions are designed and manufactured in-house to suit virtually any industrial application and we are proud to supply the UK Defence forces and support industries with specialist protection equipment.
The team here at FDB Electrical have a long experience with specialist earth protection systems and in consequence we have available at our Online store an extensive range of panel mounting items including RCDs, Earth Continuity Monitors and special purpose electrical protection devices for panel builders and installers to assemble your own application specific equipment.
Features include – compliance with BS4293, AC and DC types, multi-range protection levels including pre-set and user adjustable types. Solid state circuitry for immunity to voltage transients and DC component, associated core balance transformers in a range of sizes – with panel meter (EFU10/M) and RCD Test Set available. 
However if you would like a custom protection panel produced by us and delivered to your site of choice then please call us to arrange.
The FDB Online store offers a range of specialist components for panel builders to integrate into their own electrical protection systems from core balance transformers and earth leakage relays to complete RCD panels.
Components comply with BS4293 where appropriate and offer multi-range protection levels including pre-set and user adjustable types.
Solid state circuitry is employed for optimum immunity to voltage transients and DC component.
AC and DC types are stocked for urgent delivery.
