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 161 - 180 of 192 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 Circuit Breaker Type Overall Depth Overall Dimensions Overall Length
RS Stock No. 732-0077
Mfr. Part No.4 116 64
BrandLegrand
$367.55
Each
units
4 25 A - 300mA 400 V - - - - DX3 - - - -
RS Stock No. 790-9456
Mfr. Part No.A9D55620
$356.95
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 209-1344
Mfr. Part No.A9Q44225
$200.33
Each
units
2P 25A Acti9iC60 300mA 500V 125V DIN Rail Acti 9 Instantaneous Vigi iC60 - - - -
RS Stock No. 191-6149
Mfr. Part No.A9Y63325
$385.96
Each
units
- - - - - - - - - - - - - -
RS Stock No. 825-6084
Mfr. Part No.P1RC4P25AC030
BrandLovato
$179.97
Each
units
3 + N 25 A - 30mA 230 V, 400 V - DIN Rail - - P1RC - - - -
RS Stock No. 731-9847
Mfr. Part No.4 107 05
BrandLegrand
$356.64
Each
units
2 16 A - 30mA - - - - - DX3 - - - -
RS Stock No. 191-6152
Mfr. Part No.A9Y63740
$586.66
Each
units
- - - - - - - - - - - - - -
RS Stock No. 179-9691
Mfr. Part No.A9N18564
$192.26
Each
units
- - - - - - - - - - - - - -
RS Stock No. 191-6137
Mfr. Part No.A9Y12740
$485.94
Each
units
- - - - - - - - - - - - - -
RS Stock No. 731-9865
Mfr. Part No.4 107 16
BrandLegrand
$391.03
Each
units
2 32 A - 30mA - - - - - DX3 - - - -
RS Stock No. 186-3459
Mfr. Part No.443151
BrandABB
$172.73
Each
units
- 40A FH202 A-40/0,03 30mA - - DIN Rail - Instantaneous FH200 RCD 85mm - 69mm
RS Stock No. 731-9957
Mfr. Part No.4 111 72
BrandLegrand
$460.80
Each
units
2 16 A - 300mA - - - - - DX3 - - - -
RS Stock No. 732-0112
Mfr. Part No.4 116 39
BrandLegrand
$334.60
Each
units
2 63 A - 30mA 230 V - - - - DX3 - - - -
New
RS Stock No. 209-1354
Mfr. Part No.A9Y82625
$218.10
Each
units
1P+N 25A Acti9iC40 30mA 400V 125V DIN Rail Acti 9 Instantaneous Vigi iC40 - - - -
RS Stock No. 191-6148
Mfr. Part No.A9Y62740
$494.72
Each
units
- - - - - - - - - - - - - -
RS Stock No. 732-0051
Mfr. Part No.4 116 10
BrandLegrand
$180.03
Each
units
2 25 A - 30mA - - - - - DX3 - - - -
RS Stock No. 490-466
Mfr. Part No.236776 & PXF-40/4/003-A
BrandEaton
$105.26
Each
units
- - - - - - - - - - - - - -
RS Stock No. 186-3457
Mfr. Part No.443061
BrandABB
$404.23
Each
units
- 63A FH202 AC-63/0,03 30mA - - DIN Rail - Instantaneous FH200 RCD 85mm - 69mm
RS Stock No. 731-9893
Mfr. Part No.4 108 02
BrandLegrand
$440.11
Each
units
2 20 A - 30mA 230 V - - - - DX3 - - - -
RS Stock No. 731-9948
Mfr. Part No.4 111 71
BrandLegrand
$460.80
Each
units
2 10 A - 300mA - - - - - DX3 - - - -