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 Primary Current Rating Depth Diameter Length
RS Stock No. 890-2822
Brand :RS PRO
THB3,042.86
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
Brand :RS PRO
THB4,753.56
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. 117-6016
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MVT2.5k/9A-1
THB5,707.58
Each
Units
240V - 2.5kVA Panel Mount Clockwise 1 1 Clamp 15kg 185 (Ø) x 174mm - - 185mm 174mm
RS Stock No. 890-2884
Brand :RS PRO
THB36,709.22
Each
Units
240V ac - 2.4kVA Stand Alone Clockwise 1 - Wire Termination 12kg 270 x 210 x 200mm 10A 200mm - 270mm
RS Stock No. 122-6785
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MVTC-UK9A
THB32,412.72
Each
Units
240V - 2430VA Free Standing Clockwise 1 3 - 20.5kg 230 x 200 x 365mm - - - 230mm
RS Stock No. 890-2888
Brand :RS PRO
THB66.48
Each
Units
- - - Surface Mount - - - Wire Termination 5g 10.5 x 3mm - 3mm 10.5mm -
RS Stock No. 890-2850
Brand :RS PRO
THB39,829.35
Each
Units
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
RS Stock No. 890-2796
Brand :RS PRO
THB16,228.10
Each
Units
240V 0 → 240 V, 0 → 270 V 4.8kVA Surface Mount Clockwise 1 1 Wire Termination 13.8kg 225 x 225 x 135mm 20A 135mm - 225mm
RS Stock No. 890-2890
Brand :RS PRO
THB198.21
Each
Units
- - - Surface Mount - - - Wire Termination 7g 9.5 x 2.5 x 14mm - 14mm - 9.5mm
RS Stock No. 890-2780
Brand :RS PRO
THB7,603.22
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. 890-2834
Brand :RS PRO
THB5,488.19
Each
Units
240V 0 → 240V 720VA Surface Mount Clockwise 1 1 Wire Termination 3.5kg 113 x 130 x 127mm 3A 127mm 116mm 113mm
RS Stock No. 890-2875
Brand :RS PRO
THB20,351.08
Each
Units
240V ac - 2.4kVA Stand Alone Clockwise 1 - Wire Termination 12kg 280 x 200 x 200mm 10A 200mm - 280mm
RS Stock No. 890-2894
Brand :RS PRO
THB237.28
Each
Units
- - - Surface Mount - - - Wire Termination 10g 12.5 x 3 x 16mm - 16mm - 12.5mm
RS Stock No. 890-2897
Brand :RS PRO
THB62.22
Each
Units
- - - Surface Mount - - - Wire Termination 5g 6 x 2.5 x 10mm - 10mm - 6mm
RS Stock No. 890-2853
Brand :RS PRO
THB24,979.87
Each
Units
415V 0 → 415 V, 0 → 470 V 8.14kVA Surface Mount Clockwise 3 3 Wire Termination 27kg 175 x 175 x 410mm 10A 410mm - 175mm
RS Stock No. 890-2847
Brand :RS PRO
THB8,148.69
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. 890-2840
Brand :RS PRO
THB8,344.49
Each
Units
240V 0 → 240V 1.92kVA Surface Mount Clockwise 1 1 Wire Termination 7.8kg 165 x 165 x 140mm 8A 140mm 165mm 165mm
RS Stock No. 890-2800
Brand :RS PRO
THB9,418.11
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
RS Stock No. 117-6022
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MVT2.5k/9A-1E
THB15,294.32
Each
Units
240V - 2.5kVA Surface Mount Clockwise 1 1 - 18.5kg 275 x 214 x 270mm 13A - - 275mm
RS Stock No. 890-2878
Brand :RS PRO
THB18,787.67
Each
Units
240V ac 0 → 240V ac 1.2kVA Stand Alone Clockwise 1 - Wire Termination 10kg 270 x 210 x 200mm 5A 200mm - 270mm