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 890-2765
BrandRS PRO
HK$577.01
單位
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庫存編號 890-2866
BrandRS PRO
HK$2,972.97
單位
240V ac - 1.2kVA Stand Alone Clockwise 1 - Wire Termination 10kg 280 x 200 x 200mm 5A 200mm - 280mm
RS庫存編號 890-2799
BrandRS PRO
HK$802.73
單位
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庫存編號 890-2793
BrandRS PRO
HK$996.59
單位
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庫存編號 890-2777
BrandRS PRO
HK$1,109.24
單位
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庫存編號 890-2856
BrandRS PRO
HK$2,861.21
單位
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
RS庫存編號 890-2828
BrandRS PRO
HK$693.85
單位
240V 0 → 240V 240VA Surface Mount Clockwise 1 1 Wire Termination 1.6kg 86 x 99 x 110mm 1A 110mm 87mm 113mm
RS庫存編號 117-6014
製造零件編號MVT1k/3.5A-1
HK$993.12
單位
240V - 1kVA Panel Mount Clockwise 1 1 Clamp 8kg 155 (Dia.) x 176mm - - 155mm 176mm
RS庫存編號 890-2819
BrandRS PRO
HK$3,284.77
單位
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庫存編號 890-2834
BrandRS PRO
HK$1,176.27
單位
240V 0 → 240V 720VA Surface Mount Clockwise 1 1 Wire Termination 3.5kg 113 x 130 x 127mm 3A 127mm 116mm 113mm
RS庫存編號 890-2862
BrandRS PRO
HK$2,795.62
單位
240V ac 0 → 240V ac 720VA Stand Alone Clockwise 1 - Wire Termination 6kg 230 x 140 x 140mm 3A 140mm - 230mm
RS庫存編號 890-2878
BrandRS PRO
HK$3,908.34
單位
240V ac 0 → 240V ac 1.2kVA Stand Alone Clockwise 1 - Wire Termination 10kg 270 x 210 x 200mm 5A 200mm - 270mm
RS庫存編號 890-2825
BrandRS PRO
HK$4,557.49
單位
240V 0 → 240 V, 0 → 270 V 6.72kVA Surface Mount Clockwise 1 1 Wire Termination 25kg 300 x 300 x 225mm 28A 225mm - 300mm
RS庫存編號 890-2869
BrandRS PRO
HK$10,770.13
單位
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
RS庫存編號 890-2822
BrandRS PRO
HK$692.33
單位
240V 0 → 240V 360VA Surface Mount Clockwise 1 1 Wire Termination 2.6kg 113 x 130 x 127mm 1.5A 127mm 113mm 113mm
RS庫存編號 890-2812
BrandRS PRO
HK$3,941.74
單位
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庫存編號 890-2771
BrandRS PRO
HK$1,435.28
單位
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
RS庫存編號 117-6012
製造零件編號MVT0.3/1.1A-1
HK$916.11
單位
240V - 300VA Panel Mount Clockwise 1 1 Clamp 5kg 103 (Dia.) x 172mm - - 103mm 172mm
RS庫存編號 890-2806
BrandRS PRO
HK$1,853.90
單位
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
RS庫存編號 890-2803
BrandRS PRO
HK$1,766.77
單位
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