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 81 - 100 of 186 products
Results per page
Description Price Number of Poles Current Rating Model Number Trip Sensitivity Rated AC Voltage Mounting Style Range Break Time Series Application Breaking Capacity Circuit Breaker Type Overall Depth Overall Dimensions
RS Stock No. 732-0106
Mfr. Part No.4 116 35
BrandLegrand
$223.61
Each
units
2 40 A - 300mA 230 V - - - DX3 - - - - -
RS Stock No. 179-9692
Mfr. Part No.A9N18569
$307.58
Each
units
4 125 A - 30 (Earth)mA 415 V DIN Rail Mount Acti 9 Instantaneous Vigi C120 - - RCD 73mm 198 x 95 x 73mm
RS Stock No. 610-3868
Mfr. Part No.2CSB203101R1250 - DDA203A-25/0.03
BrandABB
$188.08
Each
units
3 25 A - 30mA 415 V DIN Rail pro M compact - DDA 200 A - - - - -
RS Stock No. 124-7721
Mfr. Part No.5SV3344-6
BrandSiemens
$175.96
Each
units
4 40 A 5SV33446 30mA 400 V ac DIN Rail Sentron Instantaneous 5SV3 Industrial, Non-Residential, Residential - RCCB 89.8mm 71.8 x 77.2 x 89.8mm
RS Stock No. 790-7327
Mfr. Part No.A9D31640
$245.43
Each
units
- 40 A - 30mA 230 V DIN Rail Mount Acti 9 - iDPN - - - - -
RS Stock No. 825-6100
Mfr. Part No.P1RC4P63AC030
BrandLovato
$215.05
Each
units
4 63 A - 30mA 230 V, 400 V DIN Rail Mount - - P1RC - - - - -
RS Stock No. 732-0109
Mfr. Part No.4 116 33
BrandLegrand
$244.93
Each
units
2 63 A - 30mA 230 V - - - DX3 - - - - -
RS Stock No. 124-7730
Mfr. Part No.5SV3314-6KK12
BrandSiemens
$205.55
Each
units
2 40 A - 30mA 230 V ac DIN Rail Sentron Instantaneous 5SV3 Industrial, Non-Residential, Residential - RCCB 89.8mm 35.8 x 77.2 x 89.8mm
RS Stock No. 179-9694
Mfr. Part No.A9N18571
$176.71
Each
units
4 125 A - 500 (Earth)mA 415 V DIN Rail Mount Acti 9 Instantaneous Vigi C120 - - RCD 73mm 198 x 95 x 73mm
New
RS Stock No. 239-4981
Mfr. Part No.7540.4501.0
BrandKopp
$79.88
Each
units
4 40 A - 500mA 400 V DIN Rail - Instantaneous - - - - - -
RS Stock No. 732-0095
Mfr. Part No.4 116 31
BrandLegrand
$180.02
Each
units
2 25 A - 30mA 230 V - - - DX3 - - - - -
RS Stock No. 790-9462
Mfr. Part No.A9D60625
$240.47
Each
units
- 25 A - 100mA 230 V DIN Rail, DIN Rail Mount Acti 9 - iDPN - - - - -
RS Stock No. 124-7744
Mfr. Part No.5SV3646-6KK12
BrandSiemens
$291.44
Each
units
4 63 A - 300mA 400 V ac DIN Rail Sentron Instantaneous 5SV3 Industrial, Non-Residential, Residential - RCCB 89.8mm 71.8 x 77.2 x 89.8mm
RS Stock No. 825-6103
Mfr. Part No.P1RC4P63AC300
BrandLovato
$125.15
Each
units
4 63 A - 300mA 230 V, 400 V DIN Rail Mount - - P1RC - - - - -
RS Stock No. 610-3442
Mfr. Part No.2CSB204101R1250 - DDA204A-25/0,03
BrandABB
$184.40
Each
units
4 25 A - 30mA 415 V DIN Rail pro M compact - DDA 200 A - - - - -
RS Stock No. 124-7737
Mfr. Part No.5SV3612-6
BrandSiemens
$151.29
Each
units
2 25 A - 300mA 230 V ac DIN Rail Sentron Instantaneous 5SV3 Industrial, Non-Residential, Residential - RCCB 89.8mm 35.8 x 77.2 x 89.8mm
RS Stock No. 732-0112
Mfr. Part No.4 116 39
BrandLegrand
$352.04
Each
units
2 63 A - 30mA 230 V - - - DX3 - - - - -
RS Stock No. 790-7305
Mfr. Part No.A9D33625
$424.67
Each
units
- 25 A - 30mA 230 V DIN Rail Mount Acti 9 - iDPN - - - - -
RS Stock No. 731-9941
Mfr. Part No.4 111 59
BrandLegrand
$499.96
Each
units
2 20 A - 30mA - - - - DX3 - - - - -
RS Stock No. 825-6071
Mfr. Part No.P1RC2P25AC300
BrandLovato
$89.22
Each
units
2 25 A - 300mA 230 V DIN Rail Mount - - P1RC - - - - -
Related Products
DIN rail mounting RCBOs from 6 to 40A ...
Description:
DIN rail mounting RCBOs from 6 to 40A with C tripping characteristics and positive indication with flag windows. Rated insulation voltage: 400VRated impulse withstand voltage: 4kVRated operating voltage: 230VResidual current off time ≤0.1sRated residual operating current: 30mA, 300mARated short-circuit capacity: ...
From Siemens the 5SV3 series are RCCBs suitable ...
Description:
From Siemens the 5SV3 series are RCCBs suitable for personnel and fire protection. Available in 2 or 4 pole versions, each breaker can be DIN rail mounted. 5SV3 RCCBs offer highly reliable performance and excellent quality. Residual current operated circuit ...
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.
Vigi iC65 ELE - earth leakage add-on block ...
Description:
Vigi iC65 ELE - earth leakage add-on block - 4P - 63A - 30mA - class AC.