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.

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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 Earth Leakage Protection Type
New
RS Stock No. 201-0756
Mfr. Part No.CPR100010
BrandContactum
kr 804,82
Each
Units
4 100 A CPR100010 100mA 415 V - DIN Type AC Instantaneous CPR1000 - - - -
RS Stock No. 732-0027
Mfr. Part No.4 115 05
BrandLegrand
kr 944,76
Each
Units
1 + N 40 A - 30mA 230 V - - - - DX3 - - - -
RS Stock No. 731-9929
Mfr. Part No.4 108 14
BrandLegrand
kr 2 865,38
Each
Units
1 + N 20 A - 300mA - - - - - DX3 - - - -
RS Stock No. 731-9856
Mfr. Part No.4 107 06
BrandLegrand
kr 2 073,76
Each
Units
1 + N 20 A - 30mA - - - - - DX3 - - - -
RS Stock No. 732-0109
Mfr. Part No.4 116 33
BrandLegrand
kr 1 614,14
Each
Units
1 + N 63 A - 30mA 230 V - - - - DX3 - - - -
RS Stock No. 490-428
Mfr. Part No.236750 & PXF-40/2/03-A
BrandEaton
kr 693,91
Each
Units
1 + N 40 A - 300mA 230 V - DIN Rail PXF - PXF-A - - - -
RS Stock No. 825-6087
Mfr. Part No.P1RC2P63AC030
BrandLovato
kr 804,77
Each
Units
1 + N 63 A - 30mA 230 V - DIN Rail Mount - - P1RC - - - -
RS Stock No. 178-241
Mfr. Part No.2CCF544110E0400 - F404A-40/0.03, 2CC
BrandABB
kr 854,23
Each
Units
3 + N 40 A - 30mA 400 V - - SmiSSline Instantaneous F404 - - - -
RS Stock No. 183-3637
Mfr. Part No.442053
BrandABB
kr 1 133,29
Each
Units
3 + N 40 A F204 300mA 400 V - DIN Rail - - FH200 Domestic - RCD -
RS Stock No. 136-8588
Mfr. Part No.1492-RCDA4C40
kr 1 475,45
Each
Units
3 + N 40 A - 300mA 230 V, 400 V - DIN Rail - - 1492-RCDA Industrial 1 (Residual) kA, 10 (Short-Circuit) kA RCD -
RS Stock No. 922-8711
Mfr. Part No.236077 & PKNM-10/1N/C/003-MW
BrandEaton
kr 1 002,38
Each
Units
1 + N 10 A - 30mA 230 V - DIN Rail PKNM Instantaneous PKNM - - MCB, RCD -
RS Stock No. 136-8608
Mfr. Part No.1492-RCDA4D80
kr 3 150,28
Each
Units
3 + N 80 A - 500mA 230 V, 400 V - DIN Rail - - 1492-RCDA Industrial 1 (Residual) kA, 10 (Short-Circuit) kA RCD -
RS Stock No. 136-8590
Mfr. Part No.1492-RCDA4A40
kr 1 674,83
Each
Units
3 + N 40 A - 30mA 230 V, 400 V - DIN Rail - - 1492-RCDA Industrial 1 (Residual) kA, 10 (Short-Circuit) kA RCD -
RS Stock No. 776-7555
Mfr. Part No.A9Z22491
kr 8 631,10
Each
Units
- 100 A - 100mA 400 V, 415 V - DIN Rail Acti 9 Instantaneous iID - - - -
RS Stock No. 922-8743
Mfr. Part No.236279 & PKNM-25/1N/C/003-A-MW
BrandEaton
kr 1 236,28
Each
Units
1 + N 25 A - 30mA 230 V - DIN Rail PKNM Instantaneous PKNM - - MCB, RCD -
RS Stock No. 825-6100
Mfr. Part No.P1RC4P63AC030
BrandLovato
kr 1 352,82
Each
Units
3 + N 63 A - 30mA 230 V, 400 V - DIN Rail - - P1RC - - - -
RS Stock No. 188-1685
Mfr. Part No.P1RC4P40B300
BrandLovato
kr 10 099,10
Each
Units
3 + N - - - - - DIN Rail - - - - - - -
RS Stock No. 776-7488
Mfr. Part No.A9Z26440
kr 811,30
Each
Units
- 40 A - 500mA 400 V, 415 V - DIN Rail Acti 9 Instantaneous iID - - - -
RS Stock No. 124-7743
Mfr. Part No.5SV3646-6
BrandSiemens
kr 1 435,68
Each
Units
3 + N 63 A - 300mA 400 V - DIN Rail Sentron Instantaneous 5SV3 Industrial, Non-Residential, Residential - RCCB -
RS Stock No. 179-9694
Mfr. Part No.A9N18571
kr 1 156,68
Each
Units
4 125 A - 500 (Earth)mA 415 V - DIN Rail Mount Acti 9 Instantaneous Vigi C120 - - RCD -
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