Mounting and connecting auxiliary switches

An auxiliary switch to indicate switch position (3KC9603-1) comes already installed in the 3KC3 transfer switching equipment. A maximum of one additional auxiliary switch may be mounted.

With the 3KC6 transfer switching equipment, it is possible to mount a maximum of two auxiliary switches.

Auxiliary switches with separate contacts (3KC9603-1) and auxiliary switches with linked common contacts (3KC9603-2) can be selected depending on requirements.

Mounting auxiliary switches

Procedure

  1. Check that the transfer switching equipment is in the 0 position.
    Check that the auxiliary switch that you want to use is also in the 0 position.

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    Check switch position 0
  2. With the 3KC3 transfer switching equipment only or if an auxiliary switch has already been mounted: Remove the fixing screws of the auxiliary switch which has already been mounted.

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    3KC3: Remove the fixing screws of the auxiliary switch
  3. If you are only mounting one auxiliary switch (3KC6), fix the auxiliary switch with the 20 mm long screws.  

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    Mount one auxiliary switch (3KC6)

    If you are mounting two auxiliary switches, fix these using the 35 mm long screws.

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    Mount two auxiliary switches

Connecting auxiliary switches

See the table and figures below for the requirements of the supply lines needed for the connection:

Cu

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0.5 ... 2.5 mm2

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0.5 ... 1.5 mm2

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Connecting the auxiliary conductor

Procedure

  1. Strip the cable insulation as shown in the figure below.
    Connect the supply lines with the auxiliary conductor in accordance with the figure.

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    Connect auxiliary switches
  2. Tighten the contacts with a screwdriver.