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
RS Stock No. 124-7741
Mfr. Part No.5SV3644-6
BrandSiemens
TWD4,061.00
Each
units
4 40 A - 300mA 400 V ac - DIN Rail Sentron Instantaneous 5SV3 Industrial, Non-Residential, Residential - RCCB -
RS Stock No. 511-9121
Mfr. Part No.ELRM44V-30
TWD4,387.00
Each
units
- 8 A - 30 30000mA 115 230 V - DIN Rail Mount - Instantaneous, Time Delay ELRM - - - -
RS Stock No. 776-3751
Mfr. Part No.A9N21454
TWD8,829.00
Each
units
- 25 A - 30mA 230 V - DIN Rail Mount Acti 9 Instantaneous DT40 - - - -
RS Stock No. 124-7742
Mfr. Part No.5SV3644-6KK12
BrandSiemens
TWD3,540.00
Each
units
4 40 A - 300mA 400 V ac - DIN Rail Sentron Instantaneous 5SV3 Industrial, Non-Residential, Residential - RCCB -
RS Stock No. 826-3335
Mfr. Part No.7840S
TWD2,322.00
Each
units
2 40 A - 30mA 230 V - DIN Rail Sentry Selective 7840S - - - -
RS Stock No. 239-4925
Mfr. Part No.7525.4801.6
BrandKopp
TWD2,398.00
Each
units
4 25 A - 30mA 400 V - DIN Rail - Instantaneous - - - - -
RS Stock No. 776-2878
Mfr. Part No.A9Q01225
TWD10,230.00
Each
units
- 25 A - 30mA 130 V - DIN Rail Mount Acti 9 Instantaneous iC60 - - - -
RS Stock No. 790-9437
Mfr. Part No.A9D38616
TWD9,402.00
Each
units
- 16 A - 30mA 230 V - DIN Rail, DIN Rail Mount Acti 9 - iDPN - - - -
RS Stock No. 776-2881
Mfr. Part No.A9V14263
TWD14,230.00
Each
units
- 63 A - 300mA 230 V, 400 V, 415 V - DIN Rail Mount Acti 9 Instantaneous iC60 - - - -
RS Stock No. 776-3789
Mfr. Part No.A9N21486
TWD11,370.00
Each
units
- 40 A - 30mA 230 V - DIN Rail Mount Acti 9 Instantaneous iTG40 - - - -
RS Stock No. 183-3555
Mfr. Part No.179532
BrandEaton
TWD34,898.00
Each
units
4 63 A - 30mA 240 V 220V DIN Rail FRCdM Time Delay FRCDM Frequency Converter 630 A RCD -
RS Stock No. 790-9446
Mfr. Part No.A9D55610
TWD6,268.00
Each
units
- 10 A - 30mA 230 V - DIN Rail Mount Acti 9 Instantaneous iDPN - - - -
RS Stock No. 776-3764
Mfr. Part No.A9N21474
TWD14,570.00
Each
units
- 25 A - 30mA 230 V, 400 V - DIN Rail Mount Acti 9 Instantaneous DT40 - - - -
RS Stock No. 790-9507
Mfr. Part No.A9D42606
TWD6,580.00
Each
units
- 6 A - 300mA 230 V - DIN Rail, DIN Rail Mount Acti 9 - iDPN - - - -
RS Stock No. 124-7725
Mfr. Part No.5SV3111-6
BrandSiemens
TWD5,660.00
Each
units
2 16 A - 10mA 230 V ac - DIN Rail Sentron Instantaneous 5SV3 Industrial, Non-Residential, Residential - RCCB -
RS Stock No. 790-9468
Mfr. Part No.A9D55625
TWD6,268.00
Each
units
- 25 A - 30mA 230 V - DIN Rail Mount Acti 9 Instantaneous iDPN - - - -
RS Stock No. 922-8721
Mfr. Part No.PKNM-16/1N/C/003-A-MW
BrandEaton
TWD3,006.00
Each
units
2 16 A - 30mA 230 V - DIN Rail PKNM Instantaneous PKNM - - MCB, RCD -
RS Stock No. 922-8658
Mfr. Part No.PFIM-40/2/03-A-MW
BrandEaton
TWD3,556.00
Each
units
2 40 A - 300mA 230 400 V - DIN Rail PFIM Instantaneous PFIM - - RCCB -
RS Stock No. 610-3442
Mfr. Part No.2CSB204101R1250 - DDA204A-25/0,03
BrandABB
TWD3,345.00
Each
units
4 25 A - 30mA 415 V - DIN Rail Pro M compact - DDA 200 A - - - -
RS Stock No. 776-3701
Mfr. Part No.A9R12440
TWD9,315.00
Each
units
- 40 A - 100mA 400 V, 415 V - DIN Rail Mount Acti 9 Instantaneous iID - - - -