Variac Transformer, Variable Autotransformer | RS
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    Variacs

    Variacs are also known as autotransformers and are a speciality type of the electrical transformer that consists only one winding. The winding acts as both primary and secondary sides of the transformer. The ordinary type of transformers have 2 coils instead and they are not electrically connected. The one winding resolution allows for producing a smaller, lighter and cheaper transformers than ordinary 2 winding ones. They also feature lower leakage reactance, lower losses lower excitation current and increased VA rating for a given size and mass. At the other side, the disadvantage is a lack any electrical insulation between circuits. It can result in full input voltage applied to the output.

    Variacs/Autotransformers are commonly used for:

    • Power transmission and distribution – Variacs ensure that voltage at the beginning of the power distribution line is equivalent to the voltage at the end of the line.

    • Power conversions – Variacs are able to convert common domestic mains voltage bands that are in use across the world. For example 200 V to 250 V or 100 V to 130V.

    • Audio systems – Autotransformers are used to adapt speakers to constant- voltage distribution and for matching impendence levels.

    65 Producten voor Variacs

    240V
    0 → 240 V, 0 → 270 V
    1.2kVA
    Surface Mount
    Clockwise
    1
    1
    Wire Termination
    6kg
    175 x 175 x 102mm
    5A
    102mm
    -
    175mm
    240V
    0 → 240V
    1.44kVA
    Surface Mount
    Clockwise
    1
    1
    Wire Termination
    6.2kg
    165 x 165 x 125mm
    6A
    125mm
    165mm
    165mm
    240V ac
    0 → 240V ac
    1.2kVA
    Stand Alone
    Clockwise
    1
    -
    Wire Termination
    10kg
    280 x 200 x 200mm
    5A
    200mm
    -
    280mm
    240V
    0 → 240 V, 0 → 270 V
    480VA
    Surface Mount
    Clockwise
    1
    1
    Wire Termination
    3.8kg
    160 x 130 x 160mm
    2A
    160mm
    -
    160mm
    240V
    0 → 240 V, 0 → 270 V
    170VA
    Surface Mount
    Clockwise
    1
    1
    Wire Termination
    1.4kg
    83 x 80mm
    0.7A
    96mm
    83mm
    80mm
    240V
    0 → 240 V, 0 → 270 V
    170VA
    Surface Mount
    Clockwise
    1
    1
    Wire Termination
    1.9kg
    160 x 130 x 160mm
    0.7A
    160mm
    -
    160mm
    240V
    0 → 240 V, 0 → 270 V
    1.2kVA
    Surface Mount
    Clockwise
    1
    1
    Wire Termination
    8.8kg
    175 x 175 x 140mm
    5A
    140mm
    -
    175mm
    240V
    0 → 240 V, 0 → 270 V
    480VA
    Surface Mount
    Clockwise
    1
    1
    Wire Termination
    2.9kg
    110 x 110 x 95mm
    2A
    95mm
    -
    110mm
    240V
    0 → 240 V, 0 → 270 V
    720VA
    Surface Mount
    Clockwise
    1
    1
    Wire Termination
    4.3kg
    160 x 130 x 160mm
    3A
    160mm
    -
    160mm
    240V ac
    -
    2.4kVA
    Stand Alone
    Clockwise
    1
    -
    Wire Termination
    12kg
    280 x 200 x 200mm
    10A
    200mm
    -
    280mm
    415V
    0 → 415 V, 0 → 470 V
    16.3kVA
    Surface Mount
    Clockwise
    3
    3
    Wire Termination
    50.1kg
    250 x 300 x 445mm
    20A
    445mm
    -
    250mm
    240V
    0 → 240 V, 0 → 270 V
    4.8kVA
    Surface Mount
    Clockwise
    1
    1
    Wire Termination
    15.3kg
    225 x 225 x 190mm
    20A
    190mm
    -
    225mm
    415V
    0 → 415 V, 0 → 470 V
    1.628kVA
    Surface Mount
    Clockwise
    3
    3
    Wire Termination
    12.9kg
    150 x 200 x 330mm
    2A
    330mm
    -
    150mm
    240V
    0 → 240 V, 0 → 270 V
    1.92kVA
    Surface Mount
    Clockwise
    1
    1
    Wire Termination
    8.8kg
    175 x 175 x 170mm
    8A
    170mm
    -
    175mm
    240V
    0 → 240 V, 0 → 270 V
    3.6kVA
    Surface Mount
    Clockwise
    1
    1
    Wire Termination
    14kg
    225 x 225 x 190mm
    15A
    190mm
    -
    225mm
    240V
    0 → 240 V, 0 → 270 V
    2.4kVA
    Surface Mount
    Clockwise
    1
    1
    Wire Termination
    9.4kg
    175 x 175 x 170mm
    10A
    170mm
    -
    175mm
    240V
    0 → 240V
    480VA
    Surface Mount
    Clockwise
    1
    1
    Wire Termination
    3.1kg
    113 x 130 x 127mm
    2A
    127mm
    113mm
    113mm
    240V ac
    0 → 240V ac
    1.2kVA
    Stand Alone
    Clockwise
    1
    -
    Wire Termination
    10kg
    270 x 210 x 200mm
    5A
    200mm
    -
    270mm
    415V
    0 → 415 V, 0 → 470 V
    8.14kVA
    Surface Mount
    Clockwise
    3
    3
    Wire Termination
    33.5kg
    200 x 250 x 425mm
    10A
    425mm
    -
    200mm
    240V
    0 → 240V
    960VA
    Surface Mount
    Clockwise
    1
    1
    Wire Termination
    5.6kg
    165 x 165 x 120mm
    4A
    120mm
    165mm
    165mm
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