RCDs

An RCD (residual current device), has been designed to protect you from fatal electric shocks as it automatically switches off electricity when there is a fault. This potentially life-saving device protects against electrocution in instances where there is a bare wire, over-heating or earth faults.

RCDs are also known as an RCCB (residual-current circuit breaker) in the UK but in the United States and Canada they are referred to as a GFCI (ground fault circuit interrupter).
If RCDs are regularly tested, they are reliable life-saving devices, reducing the risk of electric shock and protecting your home against electrical fires.

How does an RCD work?
An RCD is placed within the circuits it has to protect. By monitoring the electric current, it can quickly detect when a circuit fails and electricity is flowing incorrectly. When the fault is detected, the RCD switches off the circuit so that the person handling the wires comes to no harm.
RCDs are often integrated with a fuse or MCB (miniature circuit breaker) adding protection when there are excessive current causing spikes or surges in the circuit.

Types of RCD
  • Fixed RCDs: they are installed in a fuse box and are used for both industrial and domestic applications. They protect lots of circuits and provide an excellent level of protection. RCDs located within a consumer power distribution unit are mostly passive. This allows household appliances to re-establish normal operation when the circuit power is restored.
  • Socket-Outlet RCDs: they provide individual protection to the person who is in contact with the equipment. They can be used in place of a standard socket outlet. Socket-outlet RCDs are either active or passive. They are latching in operation so are not ideal for power tools which do not require a restart when the circuit is restored.
  • Portable RCDs: they also only provide individual protection to the person who is in contact with the equipment. They plug into any standard socket, and the appliance is then plugged into the RCD. Portable RCDs are mostly active and unlatch when any abnormality is detected. People who use outside power tools would benefit from a portable RCD as their equipment could become dangerous if they were suddenly reactivated.

...
Read more Read less

Filters

Viewing 21 - 40 of 472 products
Results per page
Description Price Number of Poles Current Rating Model Number Trip Sensitivity Rated AC Voltage Rated DC Voltage Mounting Style Range Break Time Series Application Breaking Capacity Circuit Breaker Type Overall Depth
RS Stock No. 790-7318
Mfr. Part No.A9D31632
£131.73
Each
Units
- 32 A - 30mA 230 V - DIN Rail Mount Acti 9 - iDPN - - - -
RS Stock No. 610-3868
Mfr. Part No.2CSB203101R1250 - DDA203A-25/0.03
BrandABB
£78.72
Each
Units
3 25 A - 30mA 415 V - DIN Rail pro M compact - DDA 200 A - - - -
RS Stock No. 490-157
Mfr. Part No.PXF-25/2/003-A
BrandEaton
£49.39
Each
Units
2 25 A - 30mA 230 V - DIN Rail PXF - PXF-A - - - -
RS Stock No. 806-7297
Mfr. Part No.A9R11291
£167.51
Each
Units
2P 100 A - 30mA 240 V - DIN Rail Mount Acti 9 - iID - - - -
RS Stock No. 922-8752
Mfr. Part No.PKNM-32/1N/C/003-MW
BrandEaton
£82.87
Each
Units
2 32 A - 30mA 230 V - DIN Rail PKNM Instantaneous PKNM - - MCB, RCD 80mm
RS Stock No. 124-7731
Mfr. Part No.5SV3342-6
BrandSiemens
£92.05
Each
Units
4 25 A - 30mA 400 V ac - DIN Rail Sentron Instantaneous 5SV3 Industrial, Non-Residential, Residential - RCCB 89.8mm
RS Stock No. 922-8682
Mfr. Part No.PFIM-25/2/003-G-MW
BrandEaton
£82.98
Each
Units
2 25 A - 30mA 230 → 400 V - DIN Rail PFIM Time Delay PFIM - - RCCB 80mm
RS Stock No. 790-9437
Mfr. Part No.A9D38616
£207.70
Each
Units
- 16 A - 30mA 230 V - DIN Rail, DIN Rail Mount Acti 9 - iDPN - - - -
RS Stock No. 826-3347
Mfr. Part No.7880S
£64.88
Each
Units
2 80 A - 30mA 230 V - DIN Rail Sentry Selective 7880S - - - -
RS Stock No. 790-7298
Mfr. Part No.A9D31620
£131.73
Each
Units
2 20 A - 30mA 230 V - DIN Rail Acti 9 - iDPN - - - -
RS Stock No. 610-3874
Mfr. Part No.2CSB203101R1400 - DDA203A-40/0,03
BrandABB
£71.53
Each
Units
3 40 A - 30mA 415 V - DIN Rail pro M compact - DDA 200 A - - - -
RS Stock No. 610-3773
Mfr. Part No.2CSB202101R1250 - DDA202A-25/0.03
BrandABB
£61.97
Each
Units
2 25 A - 30mA 415 V - DIN Rail pro M compact - DDA 200 A - - - -
RS Stock No. 776-8747
Mfr. Part No.A9V41240
£108.69
Each
Units
- 40 A - 30mA 400 V - DIN Rail Mount Acti 9 Instantaneous iC60 - - - -
RS Stock No. 922-8654
Mfr. Part No.PFIM-40/2/003-A-MW
BrandEaton
£86.28
Each
Units
2 40 A - 30mA 230 → 400 V - DIN Rail PFIM Instantaneous PFIM - - RCCB 80mm
RS Stock No. 124-7726
Mfr. Part No.5SV3311-6
BrandSiemens
£90.95
Each
Units
2 16 A - 30mA 230 V ac - DIN Rail Sentron Instantaneous 5SV3 Industrial, Non-Residential, Residential - RCCB 89.8mm
RS Stock No. 826-3344
Mfr. Part No.7860S
£57.91
Each
Units
2 63 A - 30mA 230 V - DIN Rail Sentry Selective 7860S - - - -
RS Stock No. 239-4903
Mfr. Part No.752.52801.2
BrandKopp
£36.80
Each
Units
2 25 A - 30mA 230 V - DIN Rail - Instantaneous - - - - -
RS Stock No. 806-7219
Mfr. Part No.A9V06763
£148.43
Each
Units
4P 63 A - 300mA 415 V - DIN Rail Mount Acti 9 - Vigi - - - -
RS Stock No. 863-7776
Mfr. Part No.4 115 07
BrandLegrand
£56.01
Each
Units
2 80 A - 30mA 230 V - DIN Rail - - 4115 - - - -
RS Stock No. 124-7723
Mfr. Part No.5SV3344-6KK12
BrandSiemens
£79.90
Each
Units
4 40 A - 30mA 400 V ac - DIN Rail Sentron Instantaneous 5SV3 Industrial, Non-Residential, Residential - RCCB 89.8mm
Related Products
Professional range of Schneider Electric auxiliary switches. All ...
Description:
Professional range of Schneider Electric auxiliary switches. All the auxiliaries can be DIN Rail mounted. Typical applications include bank cash machines, cold storage rooms, lifts and public lighting. Single, Double or 4 Pole versionsDIN Rail mountInstantaneous break time.
Allen Bradley general purpose RCDs from the 1492 ...
Description:
Allen Bradley general purpose RCDs from the 1492 series. The RCDs have a Type A tripping characteristic and an instantaneous break time. 2 or 4 pole versions available. All the RCDs incorporate screw terminals and can be DIN Rail mounted. 2 or 4 pole versionsDIN Rail mountScrew Terminals.
Allen Bradley general purpose RCDs from the 1492 ...
Description:
Allen Bradley general purpose RCDs from the 1492 series. The RCDs have a Type A tripping characteristic and an instantaneous break time. 2 or 4 pole versions available. All the RCDs incorporate screw terminals and can be DIN Rail mounted. 2 or 4 pole versionsDIN Rail mountScrew Terminals.
Allen Bradley general purpose RCDs from the 1492 ...
Description:
Allen Bradley general purpose RCDs from the 1492 series. The RCDs have a Type A tripping characteristic and an instantaneous break time. 2 or 4 pole versions available. All the RCDs incorporate screw terminals and can be DIN Rail mounted. 2 or 4 pole versionsDIN Rail mountScrew Terminals.