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 MonitorsRCD 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.

A range of Heavy Duty RCCB units from FDB for when you really have to get serious! FDB 2 Multiway modular RCD/RCBO panel shows the way to building renovation

Protective devices available from FDB include fully adjustable multi-function RCD’svariable earth leakage relayspercentage 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.


CB514_medium CT from FDB EFR1 Earth Leakage Relay FDB27/M RCD Protection

Our FDB electrical protection family of RCD and RCBO devices runs from the Multiway FDB 2 modular panel through the FDB 11 at 230V for general purpose building renovation upgrade and maintenance projects and the FDB 13, FDB 15 and FDB 19 3 phase units for new build installations. Also in the family is the FDB 27 MOD spec unit for aircraft or army hangers new build and replacement installations.

These proven units are a convenient option for new or replacement installations offering long life and reliability – they are available from our Online store here.

The use of RCD electrical technology has become commonplace in all areas of building services where the safety and convenience of this type of protection is of great value – but RCDs and their “sister” MCBs often need to be housed in specialist enclosures which provide for the integration of a number of devices in a custom system. Here at FDB Electrical we have created  the FDB11 as a unit which installers can readily customise and which also provides for the use of multiple units in  a grid layout. The facilities offered by the FDB11 are especially of value in the industrial and institutional arenas where capacities of 40A to 63A  and up to 100A can be accomodated

  • General purpose RCD with overload and short circuit protection
  • Steel, surface mounting enclosure c/w knockouts (IP20)
  • Conforms to BS4293 (RCD); BSEN60898 (MCB)
  • IΔn: 20mA; 30mA or 100mA

Contact our team for further details or view at our Online shop for simple purchase and delivery options.

Our range of specialist panel mounting electrical protection items available at our Online shop includes RCDs, Earth Continuity Monitors and special purpose electrical protection devices  compliant with with BS4293. These enable panel builders and installation engineers to configure their own electrical protection systems within an application specific enclosure or cabinet providing appropriate environmental protection.EFR1 Earth Leakage Relay

We offer both AC and DC types of panel mounting components to multi-range protection levels including pre-set and user adjustable types. Where appropriate we use solid state circuitry to offer immunity to voltage transients and DC components. The range includes associated core balance transformers in a range of sizes to suit each installation. EFR-52 earth fault relay

For visual monitoring we have the EFU10/M Panel meter and for testing we have a portable series 6 RCD test set.


Also Electrical Protection devices Online

10 March 2017

Our 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 […]

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FDB2 multi-way RCBO with DC immune protection

19 August 2016

The FDB2 RCBO unit is a multi-way housed earth fault protection system which shares DC immune technology with its smaller sister unit the FDB11. FDB2 offers 2 way, 3 way and 4 way options as standard with approval by Network Rail for use in DC electrified areas where it provides general purpose earth leakage protection, […]

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Earth protection components for specialist panel builders

6 April 2016

Our range of panel mounting components at our Online Store has been specifically devised for panel builders wishing to construct their own custom electrical protection for personnel and equipment – for example our range of Core Balance Transformers runs from 16mm to 240mm capacity while our Earth Line Monitors are available for 110V, 240V and […]

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New FDB11 (10A – 32A) general purpose RCBO

8 January 2016

Our new FDB11 (10 amp to 32 amp) is a general purpose RCBO with overload and short circuit protection, mounted in a steel, surface mounting enclosure c/w knockouts (IP20) it conforms to BS4293 (RCD); BSEN60898 (MCB) for IΔn: 20mA; 30mA or 100mA. As part of the FDB11 series it is complimented by the FDB11 (40A – 63A) and […]

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FDB 12 industrial RCD/MCB

4 December 2015

We are very proud of our enclosed protection units – such as the FDB12 industrial RCD/MCB – this range of single phase earth leakage protection units is suitable for 240V ( or 110V) supplies and comprises a choice of high or medium sensitivity RCD’s, featuring solid state electronic circuitry for stability and immunity from spurious tripping, […]

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New FDB Electrical website

16 October 2015

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 […]

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