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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รายละเอียดสินค้า / Description ราคา / 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. 890-2888
Brand :RS PRO
THB82.19
Each
Units
- - - Surface Mount - - - Wire Termination 5g 10.5 x 3mm - 3mm 10.5mm -
RS Stock No. 890-2866
Brand :RS PRO
THB12,988.79
Each
Units
240V ac - 1.2kVA Stand Alone Clockwise 1 - Wire Termination 10kg 280 x 200 x 200mm 5A 200mm - 280mm
RS Stock No. 117-6021
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MVT1.4k/5A-1E
THB24,395.55
Each
Units
240V - 1.4kVA Surface Mount Clockwise 1 1 - 13kg 275 x 210 x 270mm - - - 275mm
RS Stock No. 890-2881
Brand :RS PRO
THB14,697.36
Each
Units
240V ac 0 → 240V ac 1.2kVA Stand Alone Clockwise 1 - Wire Termination 10kg 280 x 200 x 200mm 5A 200mm - 280mm
RS Stock No. 890-2894
Brand :RS PRO
THB206.71
Each
Units
- - - Surface Mount - - - Wire Termination 10g 12.5 x 3 x 16mm - 16mm - 12.5mm
RS Stock No. 122-6785
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MVTC-UK9A
THB33,040.00
Each
Units
240V - 2430VA Free Standing Clockwise 1 3 - 20.5kg 230 x 200 x 365mm - - - 230mm
RS Stock No. 890-2878
Brand :RS PRO
THB18,276.83
Each
Units
240V ac 0 → 240V ac 1.2kVA Stand Alone Clockwise 1 - Wire Termination 10kg 270 x 210 x 200mm 5A 200mm - 270mm
RS Stock No. 890-2816
Brand :RS PRO
THB15,713.70
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. 890-2812
Brand :RS PRO
THB14,650.62
Each
Units
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
RS Stock No. 890-2875
Brand :RS PRO
THB19,797.46
Each
Units
240V ac - 2.4kVA Stand Alone Clockwise 1 - Wire Termination 12kg 280 x 200 x 200mm 10A 200mm - 280mm
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