multi function RCDs

FDB13 - 400V 3 phase DC immune protection from FDB ElectricalOur range of Electrical Protection devices is available at the Online store for easy reference and selection – this includes:

Enclosed units such as the FDB11 and FDB13 general purpose RCD housed units with overload and short circuit protection, also the FDB2 for multi-circuit protection in a single enclosure and the FDB21 for installations requiring interruptible RCD protection together with overload/short circuit protection.

FDB Electrical FDB19/STS provides ship to shore power for landing craftWhere external power is needed then we have the FDB27 ( also in MOD spec ) which provides protection for Ground Support Equipment – this range of earth leakage/earth monitoring devices was originally for for protection of personnel and plant in RAF/RNAS hangars but also has wider uses. Its sister the FDB27/M RCD Protection unit for Communications Vehicles is a range of special purpose RCD protection units for military communications vehicles with in-line filters.



FDB Electrical Protection and Monitoring

Enclosed units – available at our Online Store

Our full range of enclosed units are perfect for an “off the shelf” solution that you can rely on.

Industrial RCD/MCBs
Adjustable RCCBs
RCCB/ECM + Socket Outlets
Heavy Duty RCCBs
RCD Protected Distribution Boards
Range earth continuity loop monitoring units
Special purpose RCD protection units to MOD Spec
Interruptable” RCD/MCBs
Multiway RCBOs
General purpose RCDs with overload and short circuit protection
RCD Test Sets

Panel Mounting components – available at our Online Store

We can supply a full range on individual panel mounting components so that you can repair and build your own enclosed units.
Variable Earth Leakage protection relays
Earth Line monitors
Combined earth fault & earth line monitors
Multi-function RCDs with integral CT
Universal earth leakage protection relays
Single module earth leakage relays
External CTs
Industrial RCD/MCBs
Custom Panels

We are happy to produce completely bespoke units to suit your applications individual requirements.

Just get in touch!

New FDB Electrical website

Our very new FDB Electrical website gives a full overview of products with detail data sheets where applicable.

This 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.

FDB panel mounting protection unitsProtective 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.

View our new site here.


The range of FDB Electrical panel mounting items available from our Online store includes RCDs, Earth Continuity Monitors and special purpose electrical protection devices compliant with BS4293 for specialist panel builders who want to build in high performance protection to their own panels –  they are available in AC and DC varients with Multi-range protection levels including pre-set and user adjustable types.Monorail DC charging protection from FDB Electrical

Our own FDB integrated technology features solid state circuitry for immunity to voltage transients and DC components. The Online range covers many types of electrical protection items with associated core balance transformers in a selection of sizes as well as a suitable panel meter  (EFU10/M) and RCD Test Set.


FDB EFU50 Monorail DC charging protection

24 April 2015

Monorail Mass-Transit has a very successful history in Singapore where it is used extensively around the city (the LRT system) and around the nearby Changi airport (the Skytrain system) where our EFU50 DC protection units have been used. These units protect in-station equipment on the DC contactless charging system where it monitors the DC circuit […]

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New RCD/RCBO Protection website

1 April 2015

We are delighted with the new FDB Electrical website which covers our ranges of high performance electrical protection units from multi-way RCBOs to outdoor and custom distribution panels. The site presents full product information in one place, together with the FDB Knowledge Base program of guidance documents for free download. The site is populated with details on our ranges […]

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EFU15 Airfield Power Distribution

17 February 2015

The need for protection of power supply and associated personnel can arise in some unusual and interesting places. For the team here at FDB Electrical this can often mean a ministry site, such as our recent supply of power distribution pillars for an RAF training target area used by low level fighters from the NATO […]

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