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庫存編號 890-2783
BrandRS PRO
HK$1,978.08
單位
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庫存編號 117-6020
製造零件編號MVT1k/3.5A-1E
HK$5,307.38
單位
240V - 1kVA Surface Mount Clockwise 1 1 - 10kg 275 x 214 x 270mm - - - 275mm
RS庫存編號 117-6023
製造零件編號MVT3.3k/12A-1E
HK$6,808.93
單位
240V - 3.3kVA Surface Mount Clockwise 1 1 - 20kg 315 x 250 x 280mm - - - 315mm
RS庫存編號 122-6779
製造零件編號MVT9.9k/12A-3
HK$8,327.33
單位
415V - 9.9kVA - - 3 - Clamp - 190 x 220 x 680mm - 680mm - 190mm
RS庫存編號 890-2894
BrandRS PRO
HK$50.89
單位
- - - Surface Mount - - - Wire Termination 10g 12.5 x 3 x 16mm - 16mm - 12.5mm
RS庫存編號 890-2872
BrandRS PRO
HK$6,138.22
單位
240V ac 0 → 240V ac 2.4kVA Stand Alone Clockwise 1 - Wire Termination 12kg 270 x 210 x 200mm 10A 200mm - 270mm
RS庫存編號 117-6024
製造零件編號MVT4.9k/18A-1E
HK$8,019.11
單位
240V - 4.9kVA Surface Mount Clockwise 1 1 - 25kg 315 x 250 x 280mm - - - 315mm
RS庫存編號 890-2838
BrandRS PRO
HK$1,506.72
單位
240V 0 → 240V 960VA Surface Mount Clockwise 1 1 Wire Termination 5.6kg 165 x 165 x 120mm 4A 120mm 165mm 165mm
RS庫存編號 122-6783
製造零件編號MVT14.7k/18A-3E
HK$11,873.47
單位
415V - 14.7kVA Free Standing - 3 - Clamp - 285 x 280 x 690mm - 690mm - 285mm
RS庫存編號 890-2844
BrandRS PRO
HK$2,065.62
單位
415V 0 → 415 V, 0 → 470 V 1.628kVA Surface Mount Clockwise 3 3 Wire Termination 9.1kg 110 x 110 x 330mm 2A 330mm - 110mm
RS庫存編號 122-6785
製造零件編號MVTC-UK9A
HK$7,975.86
單位
240V - 2430VA Free Standing Clockwise 1 3 - 20.5kg 230 x 200 x 365mm - - - 230mm
RS庫存編號 122-6780
製造零件編號MVT14.7k/18A-3
HK$9,555.64
單位
415V - 14.7kVA - - 3 - Clamp - 190 x 220 x755mm - 755mm - 190mm
RS庫存編號 890-2884
BrandRS PRO
HK$7,679.18
單位
240V ac - 2.4kVA Stand Alone Clockwise 1 - Wire Termination 12kg 270 x 210 x 200mm 10A 200mm - 270mm
RS庫存編號 122-6782
製造零件編號MVT9.9k/12A-3E
HK$12,112.49
單位
415V - 9.9kVA Free Standing - 3 - Clamp - 285 x 280 x 630mm - 630mm - 285mm
RS庫存編號 890-2890
BrandRS PRO
HK$42.76
單位
- - - Surface Mount - - - Wire Termination 7g 9.5 x 2.5 x 14mm - 14mm - 9.5mm
RS庫存編號 117-6021
製造零件編號MVT1.4k/5A-1E
HK$5,431.68
單位
240V - 1.4kVA Surface Mount Clockwise 1 1 - 13kg 275 x 210 x 270mm - - - 275mm
RS庫存編號 117-6017
製造零件編號MVT3.3k/12A-1
HK$1,864.57
單位
240V - 3.3kVA Panel Mount Clockwise 1 1 Clamp 18kg 205 (Dia.) x 178mm - - 205mm 178mm
RS庫存編號 890-2831
BrandRS PRO
HK$992.41
單位
240V 0 → 240V 480VA Surface Mount Clockwise 1 1 Wire Termination 3.1kg 113 x 130 x 127mm 2A 127mm 113mm 113mm
RS庫存編號 890-2897
BrandRS PRO
HK$13.49
單位
- - - Surface Mount - - - Wire Termination 5g 6 x 2.5 x 10mm - 10mm - 6mm
RS庫存編號 890-2881
BrandRS PRO
HK$3,334.40
單位
240V ac 0 → 240V ac 1.2kVA Stand Alone Clockwise 1 - Wire Termination 10kg 280 x 200 x 200mm 5A 200mm - 280mm