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 1 - 20 of 72 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 Earth Leakage Protection Type
RS Stock No. 731-9932
Mfr. Part No.4 111 58
BrandLegrand
MYR1,255.88
Each
units
2 16 A - 30mA - - - - - DX3 - - - -
RS Stock No. 863-7754
Mfr. Part No.4 115 00
BrandLegrand
MYR434.61
Each
units
2 16 A - 10mA 230 V - DIN Rail - - 4115 - - - -
RS Stock No. 731-9890
Mfr. Part No.4 107 86
BrandLegrand
MYR1,161.52
Each
units
2 20 A - 30mA - - - - - DX3 - - - -
RS Stock No. 731-9871
Mfr. Part No.4 107 83
BrandLegrand
MYR1,241.68
Each
units
2 6 A - 30mA - - - - - DX3 - - - -
RS Stock No. 863-7751
Mfr. Part No.4 115 06
BrandLegrand
MYR335.11
Each
units
2 63 A - 30mA 230 V - DIN Rail - - 4115 - - - -
RS Stock No. 731-9979
Mfr. Part No.4 111 88
BrandLegrand
MYR1,932.85
Each
units
4 25 A - 30mA 400 V - - - - DX3 - - - -
RS Stock No. 863-7767
Mfr. Part No.4 117 02
BrandLegrand
MYR372.55
Each
units
4 25 A - 30mA 400 V - DIN Rail - - 4117 - - - -
RS Stock No. 863-7760
Mfr. Part No.4 117 04
BrandLegrand
MYR582.64
Each
units
4 63 A - 30mA 400 V - DIN Rail - - 4117 - - - -
RS Stock No. 732-0017
Mfr. Part No.4 111 90
BrandLegrand
MYR2,129.02
Each
units
4 40 A - 30mA 400 V - - - - DX3 - - - -
RS Stock No. 731-9948
Mfr. Part No.4 111 71
BrandLegrand
MYR1,134.90
Each
units
2 10 A - 300mA - - - - - DX3 - - - -
RS Stock No. 732-0083
Mfr. Part No.4 115 55
BrandLegrand
MYR469.81
Each
units
2 40 A - 30mA 230 V - - - - DX3 - - - -
RS Stock No. 732-0118
Mfr. Part No.4 116 38
BrandLegrand
MYR513.40
Each
units
2 40 A - 30mA 230 V - - - - DX3 - - - -
RS Stock No. 731-9856
Mfr. Part No.4 107 06
BrandLegrand
MYR887.04
Each
units
2 20 A - 30mA - - - - - DX3 - - - -
RS Stock No. 732-0023
Mfr. Part No.4 115 04
BrandLegrand
MYR408.41
Each
units
2 25 A - 30mA 230 V - - - - DX3 - - - -
RS Stock No. 732-0086
Mfr. Part No.4 116 65
BrandLegrand
MYR813.25
Each
units
4 40 A - 300mA 400 V - - - - DX3 - - - -
RS Stock No. 863-7764
Mfr. Part No.4 117 61
BrandLegrand
MYR627.50
Each
units
4 63 A - 30mA 400 V - DIN Rail - - 4117 - - - -
RS Stock No. 731-9607
Mfr. Part No.4 105 06
BrandLegrand
MYR2,130.22
Each
units
4 63 A - 30mA - - - - - DX3 - - - -
RS Stock No. 732-0077
Mfr. Part No.4 116 64
BrandLegrand
MYR858.90
Each
units
4 25 A - 300mA 400 V - - - - DX3 - - - -
RS Stock No. 731-9840
Mfr. Part No.4 107 04
BrandLegrand
MYR980.03
Each
units
2 10 A - 30mA - - - - - DX3 - - - -
RS Stock No. 732-0061
Mfr. Part No.4 116 60
BrandLegrand
MYR1,008.04
Each
units
4 25 A - 30mA 400 V - - - - DX3 - - - -