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 Application Breaking Capacity Circuit Breaker Type Earth Leakage Protection Type
RS庫存編號 124-7741
製造零件編號5SV3644-6
BrandSiemens
TWD3,669.00
單位
3 + N 40 A - 300mA 400 V - DIN Rail Sentron Instantaneous 5SV3 Industrial, Non-Residential, Residential - RCCB -
RS庫存編號 511-9121
製造零件編號ELRM44V-30 115/230VAC
TWD4,326.00
單位
- 8 A - 30 → 30000mA 115 → 230 V - DIN Rail Mount - Instantaneous, Time Delay ELRM - - - -
RS庫存編號 124-7742
製造零件編號5SV3644-6KK12
BrandSiemens
TWD3,709.00
單位
3 + N 40 A - 300mA 400 V - DIN Rail Sentron Instantaneous 5SV3 Industrial, Non-Residential, Residential - RCCB -
RS庫存編號 776-3751
製造零件編號A9N21454
TWD7,388.00
單位
- 25 A - 30mA 230 V - DIN Rail Mount Acti 9 Instantaneous DT40 - - - -
RS庫存編號 239-4925
製造零件編號7525.4801.6
BrandKopp
TWD1,524.00
單位
4 25 A - 30mA 400 V - DIN Rail - Instantaneous - - - - -
RS庫存編號 790-9487
製造零件編號A9D69632
TWD7,770.00
單位
- 32 A - 300mA 230 V - DIN Rail, DIN Rail Mount Acti 9 - iDPN - - - -
RS庫存編號 191-6135
製造零件編號A9Y12725
TWD13,291.00
單位
3 25 A Acti9iTG40 30mA 400 V - DIN Rail Acti9 Instantaneous - - - - Type AC
RS庫存編號 183-3555
製造零件編號179532 & FRCDM-63/4/003-G/BFQ
BrandEaton
TWD29,608.00
單位
3 + N 63 A - 30mA 240 V 220V DIN Rail FRCdM Time Delay FRCDM Frequency Converter 630 A RCD -
RS庫存編號 176-807
製造零件編號2CCL562111E0165 - FS401E-B16/0.03
BrandABB
TWD4,166.00
單位
2 16 A - 30mA 230 V - - SmiSSline - FS401 - - - -
RS庫存編號 191-6152
製造零件編號A9Y63740
TWD11,003.00
單位
3 40 A Acti9iDT40 300mA 400 V - DIN Rail Acti9 Instantaneous - - - - Type AC
RS庫存編號 732-0092
製造零件編號4 115 56
BrandLegrand
TWD6,008.00
單位
2 63 A - 30mA 230 V - - - - DX3 - - - -
RS庫存編號 825-6090
製造零件編號P1RC4P40AC300
BrandLovato
TWD3,346.00
單位
3 + N 40 A - 300mA 230 V, 400 V - DIN Rail - - P1RC - - - -
RS庫存編號 734-9507
製造零件編號A9N21445
TWD7,899.00
單位
- 16 A - 300mA 400 V - - Acti 9 - DT40 - - - -
RS庫存編號 731-9847
製造零件編號4 107 05
BrandLegrand
TWD6,421.00
單位
2 16 A - 30mA - - - - - DX3 - - - -
RS庫存編號 825-6071
製造零件編號P1RC2P25AC300
BrandLovato
TWD2,544.00
單位
1 + N 25 A - 300mA 230 V - DIN Rail Mount - - P1RC - - - -
RS庫存編號 183-3556
製造零件編號167906 & FRCDM-63/4/03-G/BFQ
BrandEaton
TWD29,332.00
單位
3 + N 63 A - 300mA 240 V 220V DIN Rail FRCdM Time Delay FRCDM Frequency Converter 630 A RCD -
RS庫存編號 667-0618
製造零件編號235399 & PFIM-63/2/01-MW
BrandEaton
TWD3,949.00
單位
2 63 A - 100mA - - DIN Rail XBoard - PFIM - - - -
RS庫存編號 191-6137
製造零件編號A9Y12740
TWD13,311.00
單位
3 40 A Acti9iTG40 30mA 400 V - DIN Rail Acti9 Instantaneous - - - - Type AC
RS庫存編號 922-8689
製造零件編號235445 & PFIM-63/4/03-A-MW
BrandEaton
TWD4,136.00
單位
3 + N 63 A - 300mA 230 → 400 V - DIN Rail PFIM Instantaneous PFIM - - RCCB -
RS庫存編號 124-7730
製造零件編號5SV3314-6KK12
BrandSiemens
TWD5,414.00
單位
1 + N 40 A - 30mA 230 V - DIN Rail Sentron Instantaneous 5SV3 Industrial, Non-Residential, Residential - RCCB -