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
RS庫存編號 825-6093
製造零件編號P1RC4P25AC300
BrandLovato
HK$772.92
單位
3 + N 25 A - 300mA 230 V, 400 V - DIN Rail - - P1RC - - - -
RS庫存編號 825-6071
製造零件編號P1RC2P25AC300
BrandLovato
HK$685.45
單位
1 + N 25 A - 300mA 230 V - DIN Rail Mount - - P1RC - - - -
RS庫存編號 188-1687
製造零件編號P1RC4P63B030
BrandLovato
HK$8,694.17
單位
- - - - - - DIN Rail - - - - - - -
RS庫存編號 188-1688
製造零件編號P1RC4P63B300
BrandLovato
HK$8,277.53
單位
- - - - - - DIN Rail - - - - - - -
RS庫存編號 188-1684
製造零件編號P1RC4P40B030
BrandLovato
HK$7,031.02
單位
- - - - - - DIN Rail - - - - - - -
RS庫存編號 825-6096
製造零件編號P1RC4P40AC030
BrandLovato
HK$1,020.79
單位
3 + N 40 A - 30mA 230 V, 400 V - DIN Rail - - P1RC - - - -
RS庫存編號 188-1685
製造零件編號P1RC4P40B300
BrandLovato
HK$6,890.54
單位
- - - - - - DIN Rail - - - - - - -
RS庫存編號 825-6103
製造零件編號P1RC4P63AC300
BrandLovato
HK$1,140.97
單位
3 + N 63 A - 300mA 230 V, 400 V - DIN Rail - - P1RC - - - -
RS庫存編號 825-6090
製造零件編號P1RC4P40AC300
BrandLovato
HK$901.34
單位
3 + N 40 A - 300mA 230 V, 400 V - DIN Rail - - P1RC - - - -
RS庫存編號 825-6084
製造零件編號P1RC4P25AC030
BrandLovato
HK$958.40
單位
3 + N 25 A - 30mA 230 V, 400 V - DIN Rail - - P1RC - - - -
RS庫存編號 825-6074
製造零件編號P1RC2P40AC030
BrandLovato
HK$713.77
單位
1 + N 40 A - 30mA 230 V - DIN Rail - - P1RC - - - -
RS庫存編號 825-6087
製造零件編號P1RC2P63AC030
BrandLovato
HK$1,058.59
單位
1 + N 63 A - 30mA 230 V - DIN Rail Mount - - P1RC - - - -
RS庫存編號 825-6080
製造零件編號P1RC2P63AC300
BrandLovato
HK$1,027.45
單位
1 + N 63 A - 300mA 230 V - DIN Rail - - P1RC - - - -
RS庫存編號 825-6100
製造零件編號P1RC4P63AC030
BrandLovato
HK$1,813.46
單位
3 + N 63 A - 30mA 230 V, 400 V - DIN Rail - - P1RC - - - -
RS庫存編號 825-6078
製造零件編號P1RC2P40AC300
BrandLovato
HK$780.32
單位
1 + N 40 A - 300mA 230 V - DIN Rail - - P1RC - - - -