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 Breaking Capacity at Maximum Voltage Rating Circuit Breaker Type Overall Depth Overall Dimensions
New
RS Stock No. 219-9019
Mfr. Part No.A9N18558
MYR4,866.20
Each
units
3 125A - 300mA 415V - - - - - - - - -
RS Stock No. 825-6080
Mfr. Part No.P1RC2P63AC300
BrandLovato
MYR565.71
Each
units
1 + N 63 A - 300mA 230 V - DIN Rail - - P1RC - - - -
RS Stock No. 183-3652
Mfr. Part No.452051
BrandABB
MYR1,641.32
Each
units
- 40A DDA204 30mA 400V - DIN Rail - - DDA200 - RCD 93mm -
RS Stock No. 776-2910
Mfr. Part No.A9Q31440
MYR1,880.69
Each
units
- - - - - - - - - - - - - -
RS Stock No. 790-9462
Mfr. Part No.A9D60625
MYR1,267.59
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 218-1787
Mfr. Part No.3VA9113-0RL21
BrandSiemens
MYR8,477.43
Each
units
3 160A 3VA11 - 690V 127V - SENTRON - 3VA11 - - - -
RS Stock No. 183-3654
Mfr. Part No.452043
BrandABB
MYR1,257.76
Each
units
- 25A DDA204 300mA 400V - DIN Rail - - DDA200 - RCD 93mm -
RS Stock No. 183-3554
Mfr. Part No.167905 & FRCDM-40/4/03-G/BFQ
BrandEaton
MYR5,401.42
Each
units
- - - - - - - - - - - - - -
RS Stock No. 176-885
Mfr. Part No.2CCF544310E0400 - F404A-K40/0.03,2CC
BrandABB
MYR1,134.21
Each
units
4 40 A - 30mA 400 V - - SmiSSline Instantaneous F404 - - - -
New
RS Stock No. 209-1350
Mfr. Part No.A9V54463
MYR1,419.84
Each
units
4P 63A Acti9iC60 300mA 500V 125V DIN Rail Acti 9 Instantaneous Vigi iC60 - - - -
RS Stock No. 200-6015
Mfr. Part No.5SV3347-4
BrandSiemens
MYR9,977.55
Each
units
- - - - - - - - - - - - - -
RS Stock No. 191-6132
Mfr. Part No.A9Y12440
MYR1,531.65
Each
units
- - - - - - - - - - - - - -
RS Stock No. 183-3552
Mfr. Part No.167902 & FRCDM-63/4/03-S/B
BrandEaton
MYR7,909.68
Each
units
- 63A - 300mA 240V 220V DIN Rail FRCdM - FRCDM 630 A RCD 80mm 70 x 76 x 80mm
RS Stock No. 732-0083
Mfr. Part No.4 115 55
BrandLegrand
MYR683.90
Each
units
2 40 A - 30mA 230 V - - - - DX3 - - - -
RS Stock No. 191-6137
Mfr. Part No.A9Y12740
MYR1,965.34
Each
units
- - - - - - - - - - - - - -
RS Stock No. 776-2859
Mfr. Part No.A9N18554
MYR5,316.74
Each
units
- - - - - - - - - - - - - -
RS Stock No. 731-9972
Mfr. Part No.4 111 89
BrandLegrand
MYR2,866.34
Each
units
4 32 A - 30mA 400 V - - - - DX3 - - - -
RS Stock No. 732-0061
Mfr. Part No.4 116 60
BrandLegrand
MYR1,437.27
Each
units
4 25 A - 30mA 400 V - - - - DX3 - - - -
RS Stock No. 183-3650
Mfr. Part No.450541
BrandABB
MYR1,651.21
Each
units
- 25A DDA202 30mA 400V - DIN Rail - - DDA200 - RCD 93mm -
RS Stock No. 181-2639
Mfr. Part No.56230
MYR1,646.94
Each
units
- - - - - - - - - - - - - -