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.

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Description Price Primary Voltage Rating Secondary Voltage Rating Power Rating Mounting Type Knob Rotation Number of Phases Number of Outputs Termination Type Weight Dimensions Secondary Current Depth Diameter Length
RS Stock No. 890-2822
BrandRS PRO
MYR489.44
Each
units
240V 0 → 240V 360VA Surface Mount Clockwise 1 1 Wire Termination 2.6kg 113 x 130 x 127mm 1.5A 127mm 113mm 113mm
RS Stock No. 890-2774
BrandRS PRO
MYR385.13
Each
units
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
RS Stock No. 890-2777
BrandRS PRO
MYR526.78
Each
units
240V 0 → 240 V, 0 → 270 V 720VA Surface Mount Clockwise 1 1 Wire Termination 3.5kg 110 x 110 x 115mm 3A 115mm - 110mm
RS Stock No. 890-2828
BrandRS PRO
MYR350.34
Each
units
240V 0 → 240V 240VA Surface Mount Clockwise 1 1 Wire Termination 1.6kg 86 x 99 x 110mm 1A 110mm 87mm 113mm
RS Stock No. 890-2793
BrandRS PRO
MYR494.37
Each
units
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
RS Stock No. 890-2819
BrandRS PRO
MYR1,220.54
Each
units
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
RS Stock No. 890-2838
BrandRS PRO
MYR718.12
Each
units
240V 0 → 240V 960VA Surface Mount Clockwise 1 1 Wire Termination 5.6kg 165 x 165 x 120mm 4A 120mm 165mm 165mm
RS Stock No. 890-2765
BrandRS PRO
MYR247.03
Each
units
240V 0 → 240 V, 0 → 270 V 170VA Surface Mount Clockwise 1 1 Wire Termination 1.4kg 83 x 80mm 700mA 96mm 83mm 80mm
RS Stock No. 890-2847
BrandRS PRO
MYR775.40
Each
units
240V 0 → 240V 1.44kVA Surface Mount Clockwise 1 1 Wire Termination 6.2kg 165 x 165 x 125mm 6A 125mm 165mm 165mm
RS Stock No. 890-2875
BrandRS PRO
MYR2,599.28
Each
units
240V ac - 2.4kVA Stand Alone Clockwise 1 - Wire Termination 12kg 280 x 200 x 200mm 10A 200mm - 280mm
RS Stock No. 890-2816
BrandRS PRO
MYR2,042.24
Each
units
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
RS Stock No. 890-2872
BrandRS PRO
MYR2,675.54
Each
units
240V ac 0 → 240V ac 2.4kVA Stand Alone Clockwise 1 - Wire Termination 12kg 270 x 210 x 200mm 10A 200mm - 270mm
RS Stock No. 890-2862
BrandRS PRO
MYR2,132.21
Each
units
240V ac 0 → 240V ac 720VA Stand Alone Clockwise 1 - Wire Termination 6kg 230 x 140 x 140mm 3A 140mm - 230mm
RS Stock No. 890-2803
BrandRS PRO
MYR644.09
Each
units
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
RS Stock No. 890-2783
BrandRS PRO
MYR1,040.38
Each
units
240V 0 → 240 V, 0 → 270 V 2.4kVA Surface Mount Clockwise 1 1 Wire Termination 8.5kg 175 x 175 x 135mm 10A 135mm - 175mm
RS Stock No. 890-2780
BrandRS PRO
MYR722.17
Each
units
240V 0 → 240 V, 0 → 270 V 1.92kVA Surface Mount Clockwise 1 1 Wire Termination 7.8kg 175 x 175 x 130mm 8A 130mm - 175mm
RS Stock No. 890-2884
BrandRS PRO
MYR4,354.19
Each
units
240V ac - 2.4kVA Stand Alone Clockwise 1 - Wire Termination 12kg 270 x 210 x 200mm 10A 200mm - 270mm
RS Stock No. 890-2799
BrandRS PRO
MYR360.15
Each
units
240V 0 → 240 V, 0 → 270 V 170VA Surface Mount Clockwise 1 1 Wire Termination 1.9kg 160 x 130 x 160mm 700mA 160mm - 160mm
RS Stock No. 890-2831
BrandRS PRO
MYR411.45
Each
units
240V 0 → 240V 480VA Surface Mount Clockwise 1 1 Wire Termination 3.1kg 113 x 130 x 127mm 2A 127mm 113mm 113mm
RS Stock No. 890-2800
BrandRS PRO
MYR1,061.35
Each
units
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