siemens auxiliary contacts
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    Siemens Auxiliary Contacts

    Auxiliary contacts, also known as auxiliary contactors are electromechanical devices used in conjunction with primary switching equipment such as contactors, circuit breakers, switches, and relays. These secondary switching devices are physically connected to the main switching equipment and work at the same time. The add-on accessories are available in a range of contact configurations and mounting styles to suit a wide range of industrial control applications.RS offer an extensive range of high-quality auxiliary contact blocks from industry-leading brands including Schneider Electric, Siemens, ABB, Lovato, Eaton, and of course RS Pro.

    How do auxiliary contacts work?

    Auxiliary contacts are affixed to the main contacts and change state when the main contacts do. They pass the data from the circuit to a logic controller, which in turn gives instructions to the linked devices about whether to turn on or off. Alternatively, they can be used as a standalone hardware control unit. Auxiliary contacts are available in a variety of mounting styles such as a front mount or DIN rail mount and a range of terminal types including screw terminals, screw clamp terminals, and cage clamp terminals making it easy to find the right contact for the application.

    What are auxiliary contacts used for?

    One common usage of auxiliary contacts is in push-button controllers, where they can be built into the start button. They are a common component in relay logic circuits solid-state electronics, electric motors, motor control schemes, and other industrial control applications.

    What are the different types of contact blocks?

    There are two types of contact, contacts that are closed in a non-activated state and those that are open. They will be described as N/C (normally closed) and N/O (normally open).NC contacts are used as interlocks. NO contacts are used for switching on other components such as status indication lamps.

    243 Products showing for Siemens Auxiliary Contacts

    Siemens
    2
    2NO
    Snap-On
    Sirius Innovation
    3RH2
    6 A ac, 10 A dc
    Screw
    250 V dc, 690 V ac
    DPST
    -
    -25°C
    +60°C
    -
    Siemens
    4
    4NO
    Snap-On
    Sirius Innovation
    3RH2
    6 A ac, 10 A dc
    Cage Clamp
    250 V dc, 690 V ac
    4PST
    -
    -25°C
    +60°C
    -
    Siemens
    3
    2NC + 4NO
    Side Mount
    SENTRON
    3VA
    6 A
    Screw
    -
    -
    -
    -
    -
    -
    Siemens
    1
    NC
    Snap-On
    Sirius Classic
    3RH1
    1 A
    Screw
    690 V
    SP
    -
    -55°C
    +80°C
    -
    Siemens
    4
    4NO
    Snap-On
    Sirius Innovation
    3RH2
    6 A dc, 10 A ac
    Screw
    250 V dc, 690 V ac
    4PST
    -
    -25°C
    +60°C
    -
    Siemens
    2
    2NC
    DIN Rail Mount
    SENTRON
    5ST3
    6 A
    Screw
    230 V ac
    DP
    -
    -5°C
    +40°C
    -
    Siemens
    -
    -
    -
    Sirius Classic
    3RH1
    -
    -
    -
    -
    -
    -
    -
    -
    Siemens
    1
    NC
    Snap-On
    Sirius Innovation
    3RH2
    6 A ac, 10 A dc
    Screw
    250 V dc, 690 V ac
    SPST
    -
    -25°C
    +60°C
    -
    Siemens
    3
    NO/2NC
    Snap-On
    Sirius Innovation
    -
    6 A ac, 10 A dc
    Cage Clamp
    250 V dc, 690 V ac
    3PST
    -
    -25°C
    +60°C
    -
    Siemens
    4
    2NC + 2NO
    Snap-On
    SIRIUS
    3RH
    10 A
    -
    690 V
    -
    -
    -
    -
    -
    Siemens
    1
    NO
    Snap-On
    Sirius Classic
    3RH1
    1 A
    Screw
    690 V
    SP
    -
    -55°C
    +80°C
    -
    Siemens
    2
    NO/NC
    -
    SIRIUS
    3RT1
    20 mA
    Screw
    -
    -
    -
    -25°C
    +60°C
    -
    Siemens
    2
    NO/NC
    Snap-On
    Sirius Innovation
    -
    10 A
    Screw
    250 V dc, 690 V ac
    DPST
    -
    -25°C
    +60°C
    -
    Siemens
    -
    -
    -
    SENTRON
    5ST3
    -
    -
    -
    -
    -
    -
    -
    -
    Siemens
    1
    NC
    Snap-On
    Sirius Innovation
    3RH2
    6 A ac, 10 A dc
    Screw
    250 V dc, 690 V ac
    SPST
    -
    -25°C
    +60°C
    -
    Siemens
    1
    NO/NC
    Plug In
    SIRIUS
    3RV2
    1 A dc, 10 A ac
    Screw
    250 V dc, 690 V ac
    SPDT
    -
    -20°C
    +60°C
    -
    Siemens
    4
    4NC
    Snap Front
    Sirius Innovation
    3RH2
    10 A
    Screw
    600 V dc, 690 V ac
    4P
    -
    -25°C
    +60°C
    -
    Siemens
    2
    NO/NC
    Plug In
    SIRIUS
    -
    1 A dc, 2.5 A ac
    Cage Clamp
    60 V dc, 230 V ac
    DP
    -
    -20°C
    +60°C
    -
    Siemens
    1
    NO
    Snap-On
    Sirius Innovation
    3RH2
    6 A ac, 10 A dc
    Screw
    250 V dc, 690 V ac
    SPST
    -
    -25°C
    +60°C
    -
    Siemens
    2
    1NC + 1NO
    DIN Rail Mount
    SENTRON
    5ST3
    -
    -
    50 V
    -
    -
    -
    -
    -
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