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 Earth Leakage Protection Type Overall Depth
RS庫存編號 124-7741
製造零件編號5SV3644-6
BrandSiemens
TWD3,811.00
單位
- 40A - 300mA 400V - DIN Rail Sentron Instantaneous 5SV3 - RCCB - 89.8mm
RS庫存編號 124-7742
製造零件編號5SV3644-6KK12
BrandSiemens
TWD4,769.00
單位
- 40A - 300mA 400V - DIN Rail Sentron Instantaneous 5SV3 - RCCB - 89.8mm
RS庫存編號 124-7737
製造零件編號5SV3612-6
BrandSiemens
TWD3,591.00
單位
- 25A - 300mA 230V - DIN Rail Sentron Instantaneous 5SV3 - RCCB - 89.8mm
RS庫存編號 124-7738
製造零件編號5SV3614-6
BrandSiemens
TWD3,880.00
單位
- 40A - 300mA 230V - DIN Rail Sentron Instantaneous 5SV3 - RCCB - 89.8mm
RS庫存編號 124-7721
製造零件編號5SV3344-6
BrandSiemens
TWD2,951.00
單位
- 40A 5SV33446 30mA 400V - DIN Rail Sentron Instantaneous 5SV3 - RCCB - 89.8mm
全新
RS庫存編號 210-9375
製造零件編號3VA9324-0RL30
BrandSiemens
TWD60,518.00
單位
4 400A - - 100 → 690V - Screw Mount SENTRON - 3VA911 - - - -
RS庫存編號 124-7739
製造零件編號5SV3642-6
BrandSiemens
TWD3,743.00
單位
- 25A - 300mA 400V - DIN Rail Sentron Instantaneous 5SV3 - RCCB - 89.8mm
RS庫存編號 200-6017
製造零件編號5SV3642-4
BrandSiemens
TWD29,778.00
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 210-9331
製造零件編號3VA9214-0RS20
BrandSiemens
TWD48,895.00
單位
4 250A - - 127 → 480V - Screw Mount SENTRON - 3VA911 - - - -
全新
RS庫存編號 210-9327
製造零件編號3VA9213-0RS20
BrandSiemens
TWD44,888.00
單位
3 250A - - 127 → 480V - Screw Mount SENTRON - 3VA911 - - - -
RS庫存編號 124-7733
製造零件編號5SV3344-6KL
BrandSiemens
TWD3,002.00
單位
- 40A - 30mA 400V - DIN Rail Sentron Instantaneous 5SV3 - RCCB - 89.8mm
全新
RS庫存編號 218-1798
製造零件編號3VA9123-0RL30
BrandSiemens
TWD46,339.00
單位
3 160A 3VA21 - 690V 100V - SENTRON - 3VA21 - - - -
全新
RS庫存編號 210-3524
製造零件編號3VA9214-0RL20
BrandSiemens
TWD48,895.00
單位
4 250A 3VA9214-0RL20 - - - Screw Mount SENTRON - 3VA9 - - - -
RS庫存編號 124-7732
製造零件編號5SV3342-6KK12
BrandSiemens
TWD4,769.00
單位
- 25A - 30mA 400V - DIN Rail Sentron Instantaneous 5SV3 - RCCB - 89.8mm
全新
RS庫存編號 210-9339
製造零件編號3VA9224-0RL30
BrandSiemens
TWD50,499.00
單位
4 250A - - 100 → 690V - Screw Mount SENTRON - 3VA911 - - - -
RS庫存編號 124-7731
製造零件編號5SV3342-6
BrandSiemens
TWD3,669.00
單位
- 25A - 30mA 400V - DIN Rail Sentron Instantaneous 5SV3 - RCCB - 89.8mm
全新
RS庫存編號 210-9290
製造零件編號3VA9114-0RL20
BrandSiemens
TWD44,086.00
單位
4 160A - - 100 → 480V - Screw Mount SENTRON - 3VA911 - - - -
RS庫存編號 124-7726
製造零件編號5SV3311-6
BrandSiemens
TWD4,609.00
單位
- 16A - 30mA 230V - DIN Rail Sentron Instantaneous 5SV3 - RCCB - 89.8mm
全新
RS庫存編號 218-1845
製造零件編號3VA9323-0RL30
BrandSiemens
TWD55,527.00
單位
3 160A 3VA23 - 690V 100V - SENTRON - 3VA23 - - - -
RS庫存編號 124-7722
製造零件編號5SV3344-6KK01
BrandSiemens
TWD9,779.00
單位
- 40A - 30mA 400V - DIN Rail Sentron Time Delay 5SV3 - RCCB - 89.8mm