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    RCCBs

    An RCCB or residual-current circuit breaker is a safety device used to protect electrical circuits. RCCBs protect people from electric shocks, and electrocution and help prevent electrical fires.

    RS offers an extensive range of high-performance RCCBs and RCDs from leading brands including ABB, Schneider Electric, and Siemens.

    How does an RCCB work?

    An RCCBs incoming current must equal the outgoing current in any circuit. RCCBs can compare the difference in current values between the live and neutral wires. When appliances are working correctly all current entering the appliance through the live wire leaves the appliance via the neutral wire. If a fault occurs some current can flow through the earth wire if there is no earth this can even flow through you. This results in the unequal current flow coming into the device to what is going out, this difference is referred to as residual current.

    What is the difference between an RCCB and an RCD?

    An RCD (residual current device) can keep an electrical system safe by preventing fatal electrical shocks. RCDs can also provide protection from electrical fires. An RCCB is essentially an RCD minus the overload protection. They are typically used in applications where the risk of electric shock is limited. For more detailed information see our in-depth RCDs Guide.

    What are the different types of RCCB and RCD?

    RCCBs and RCDs are usually mounted on DIN rail. They can be 2, 3, or 4 poles. Varying in current ratings, trip sensitivity, and tripping characteristics. All these specifications should be carefully considered depending on your individual needs and application.

    1651 產品顯示為 RCCBs

    • RS庫存編號 231-8304
    • 製造零件編號 5SM2645-6
    HK$1,390.20
    Siemens
    RCCB
    63A
    4
    SENTRON
    300mA
    Type A
    5SM2645
    400V ac
    -
    -
    -
    -
    • RS庫存編號 219-9020
    • 製造零件編號 A9N18559
    HK$9,248.10
    Schneider Electric
    RCD
    125A
    3
    -
    1000mA
    -
    Vigi C120
    -
    -
    -
    -
    -
    • RS庫存編號 540-1638
    • 製造零件編號 2CSF202006R1630 FH202 AC-63/0,03
    HK$739.18
    ABB
    RCCB
    63A
    2
    -
    30mA
    Type AC
    FH200
    -
    -
    -
    -
    -
    • RS庫存編號 231-9892
    • 製造零件編號 2CSB203001R3400 DDA203 AC-40/0.3
    HK$1,008.12
    ABB
    RCD
    40A
    3
    -
    300mA
    -
    DDA203
    -
    -
    -
    -
    -
    • RS庫存編號 230-6682
    • 製造零件編號 A9N18578
    HK$8,480.93
    Schneider Electric
    RCD
    125A
    4
    Acti9
    30mA
    -
    Vigi C120
    -
    -
    -
    -
    -
    • RS庫存編號 232-0338
    • 製造零件編號 2CSB803001R1630 DDA803 AC-63/0.03
    HK$4,336.23
    ABB
    RCD
    63A
    3
    -
    30mA
    -
    DDA803AC
    -
    -
    -
    -
    -
    • RS庫存編號 251-2032
    • 製造零件編號 CDS743F
    HK$1,243.91
    Hager
    -
    40A
    2
    -
    30mA
    Type A
    CDS
    230V
    -
    -
    -
    -
    • RS庫存編號 282-4687
    • 製造零件編號 5SV3745-8
    HK$15,580.70
    Siemens
    RCCB
    125A
    4
    5SV3
    500mA
    Type A
    5SV3
    230/400V
    -
    -
    -
    -
    • RS庫存編號 212-258
    • 製造零件編號 A9Z35440
    HK$2,255.01
    Schneider Electric
    RCCB
    40A
    4
    Acti9
    300mA
    Type A-SI
    A9Z
    380-415V ac
    -
    -
    -
    -
    • RS庫存編號 211-962
    • 製造零件編號 A9V22425
    HK$3,273.09
    Schneider Electric
    RCD
    25A
    4
    Acti9
    100mA
    Type A
    A9V
    230-415V ac
    -
    -
    -
    -
    • RS庫存編號 328-413
    • 製造零件編號 5SM2121-6
    HK$1,320.70
    Siemens
    RCCB
    16A
    2
    SENTRON
    10mA
    Type A
    5SM21
    230V
    -
    -
    -
    -
    • RS庫存編號 144-4889
    • 製造零件編號 CDC840F
    HK$2,515.51
    Hager
    RCCB
    40A
    4
    -
    30mA
    -
    -
    -
    -
    -
    -
    -
    Better World
    • RS庫存編號 209-6567
    • 製造零件編號 5SV3314-3
    HK$3,574.70
    Siemens
    RCCB
    40A
    2
    SENTRON
    30mA
    Type F
    5SV3
    230V ac
    -
    Extended product life
    Yes
    -
    Better World
    • RS庫存編號 210-3528
    • 製造零件編號 3VA9223-0RL30
    HK$11,837.50
    Siemens
    RCD
    250A
    3
    SENTRON
    -
    Type A
    3VA9
    -
    -
    Extended product life, Saves energy
    Yes
    -
    Better World
    • RS庫存編號 241-4456
    • 製造零件編號 5SV3846-8
    HK$1,912.20
    Siemens
    RCCB
    63A
    4
    SENTRON
    -
    Type A
    SENTRON 5SV3xxx
    400V ac
    -
    Extended product life
    Yes
    -
    Better World
    • RS庫存編號 231-8372
    • 製造零件編號 5SV3312-6GV01
    个(每托盘 36 )
    HK$645.086
    Siemens
    RCCB
    25A
    2
    SENTRON
    30mA
    Type A
    5SM2645
    230V ac
    -
    Extended product life
    Yes
    -
    Better World
    • RS庫存編號 248-3698
    • 製造零件編號 A9R31491
    HK$9,333.70
    Schneider Electric
    RCCB
    100A
    4
    Acti9
    30mA
    Type A-SI
    iID
    415V ac
    -
    -
    Yes
    Green Premium
    Better World
    • RS庫存編號 191-6134
    • 製造零件編號 A9Y12640
    HK$2,351.16
    Schneider Electric
    RCD
    40A
    1+N
    Acti9
    30mA
    -
    Vigi iTG40
    -
    -
    -
    Yes
    Green Premium
    Better World
    • RS庫存編號 191-6147
    • 製造零件編號 A9Y62725
    HK$3,143.24
    Schneider Electric
    RCD
    25A
    3
    Acti9
    30mA
    -
    Vigi iDT40
    400V
    -
    -
    Yes
    Green Premium
    Better World
    • RS庫存編號 218-1845
    • 製造零件編號 3VA9323-0RL30
    HK$14,702.70
    Siemens
    RCD
    400A
    3
    SENTRON
    -
    Type A
    3VA93
    -
    -
    Extended product life, Saves energy
    Yes
    -
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