Autotransformers

An autotransformer, also known as a step-down transformer, is an electrical transformer with only one winding. The winding has at least 3 taps where electrical connections are made. Autotransformers have the benefit of being small, light and cheap compared to dual-winding transformers.
Autotransformers are used to step up or step down voltages in the 110V-115V-120V range and 220V-230V-240V range. This allows electrical equipment from the US to be fed from higher European voltage.
Applications
• Can be used as a method of soft starting induction motors
• In UK railway applications
• In audio applications, tapped autotransformers are used to adapt speakers to constant-voltage distribution systems
• Power applications to interconnect systems operating at different voltages
• Special autotransformers are used on rural power distribution lines so that customers further away receive the same average voltage as ones nearer to the source

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Beskrivning Pris Primary Voltage Rating Secondary Voltage Rating Power Rating Construction Mounting Type Core Type Termination Type Length Dimensions Width Depth Minimum Operating Frequency Maximum Operating Frequency Minimum Temperature
RS-artikelnummer 310-1140
Tillv. art.nrSAT100
VarumärkeBlock
504,39 kr
Each
Enheter
230V ac 115 V ac 100VA - - - - 166mm 166 x 76 x 77mm 76mm 77mm - - -
RS-artikelnummer 293-2656
Tillv. art.nrAIM 1.6/0.8
VarumärkeBlock
492,70 kr
Each
Enheter
115 V ac, 230 V ac 115 V ac, 220 V ac, 230 V ac, 240 V ac - Enclosed Panel Mount - Screw 166mm 166 x 77 x 76mm 77mm 76mm 50Hz 60Hz -20°C
RS-artikelnummer 436-8877
Tillv. art.nrCMA30K/FM0
VarumärkeCarroll & Meynell
6 774,56 kr
Each
Enheter
380 V, 400 V, 415 V 380 V, 400 V, 415 V 30kVA - - Bobbin - 420mm 420 x 350 x 260mm 350mm 260mm - - -
RS-artikelnummer 436-8883
Tillv. art.nrCM3000/A/US
VarumärkeCarroll & Meynell
1 970,18 kr
Each
Enheter
230V 114.1V ac 3kVA - - Bobbin - 205mm 205 x 195 x 260mm 260mm 190mm - - -
RS-artikelnummer 436-9842
Tillv. art.nrAIM10/5
VarumärkeBlock
2 148,24 kr
Each
Enheter
115 V ac, 230 V ac 115 V ac, 220 V ac, 230 V ac, 240 V ac - Enclosed Panel Mount - Screw 283mm 283 x 200 x 165mm 165mm 200mm 50Hz 60Hz -20°C
RS-artikelnummer 310-1156
Tillv. art.nrSAT200
VarumärkeBlock
508,31 kr
Each
Enheter
230V ac 115 V ac 200VA - - - - 166mm 166 x 76 x 77mm 76mm 77mm - - -
RS-artikelnummer 328-8051
Tillv. art.nrSAT 500
VarumärkeBlock
1 053,85 kr
Each
Enheter
230V ac 115 V ac 500VA - - - - 223mm 223 x 97 x 117mm 97mm 117mm - - -
RS-artikelnummer 738-7852
Tillv. art.nrAT3 10-38/42-4
VarumärkeBlock
2 064,59 kr
Each
Enheter
380 V ac, 415 V ac 400 V ac 10kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 90/31,5 Screw 220mm 220 x 105 x 175mm 105mm 175mm 50Hz 60Hz -
RS-artikelnummer 738-7856
Tillv. art.nrAT3 10-44/46-4
VarumärkeBlock
3 446,94 kr
Each
Enheter
440 V ac, 460 V ac 400 V ac 10kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 114/40 Screw 267mm 267 x 125 x 215mm 125mm 215mm 50Hz 60Hz -
RS-artikelnummer 738-7830
Tillv. art.nrAT3 3,5-48/50-4
VarumärkeBlock
2 404,46 kr
Each
Enheter
480 V ac, 500 V ac 400 V ac 3.5kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 90/41,5 Screw 220mm 220 x 115 x 175mm 115mm 175mm 50Hz 60Hz -
RS-artikelnummer 738-7859
Tillv. art.nrAT3 10-24/35-4
VarumärkeBlock
5 142,08 kr
Each
Enheter
240 V ac, 346 V ac 400 V ac 10kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 150/65 Screw 350mm 350 x 162 x 280mm 162mm 280mm 50Hz 60Hz -
RS-artikelnummer 738-7884
Tillv. art.nrAT3 15-48/50-4
VarumärkeBlock
5 054,61 kr
Each
Enheter
480 V ac, 500 V ac 400 V ac 15kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 132/72 Screw 315mm 315 x 165 x 250mm 165mm 250mm 50Hz 60Hz -
RS-artikelnummer 738-7837
Tillv. art.nrAT3 3,5-44/46-4
VarumärkeBlock
1 530,53 kr
Each
Enheter
3 x 440 V ac, 460 V ac 400V ac 3.5 kVA, 10 kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 75/41,5 Screw 155mm 155 x 110 x 155mm 110mm 155mm 50Hz 60Hz -
RS-artikelnummer 158-7312
Tillv. art.nrE-JET 250
VarumärkeBlock
2 850,43 kr
Each
Enheter
230V ac 110 V ac 250VA Enclosed - - Cable with Plug, 3-Pin USA Socket 160mm 160 x 95 x 155mm 95mm 155mm 50Hz 60Hz -
RS-artikelnummer 504-183
VarumärkeRS PRO
787,91 kr
Each
Enheter
220 V ac, 230 V ac, 240 V ac 115V ac 100VA Enclosed Chassis Mount, Floor Standing, Wall Mount - - 65mm 65 x 115 x 78mm 115mm 78mm 50Hz 60Hz -
RS-artikelnummer 738-7919
Tillv. art.nrAT3 25-48/50-4
VarumärkeBlock
6 906,40 kr
Each
Enheter
480 V ac, 500 V ac 400 V ac 25kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 150/77 Screw 350mm 350 x 192 x 280mm 192mm 280mm 50Hz 60Hz -
RS-artikelnummer 738-7887
Tillv. art.nrAT3 15-38/42-4
VarumärkeBlock
1 271,88 kr
Each
Enheter
380 V ac, 415 V ac 400 V ac 15kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 90/51,1 Screw 220mm 220 x 125 x 175mm 125mm 175mm 50Hz 60Hz -
RS-artikelnummer 738-7846
Tillv. art.nrAT3 10-20/21-4
VarumärkeBlock
7 675,07 kr
Each
Enheter
200 V ac, 208 V ac 400 V ac 10kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 150/77 Screw 350mm 350 x 192 x 280mm 192mm 280mm 50Hz 60Hz -
RS-artikelnummer 310-1162
Tillv. art.nrSAT300
VarumärkeBlock
676,75 kr
Each
Enheter
230V ac 115 V ac 300VA - - - - 223mm 223 x 97 x 117mm 97mm 117mm - - -
RS-artikelnummer 738-7880
Tillv. art.nrAT3 15-44/46-4
VarumärkeBlock
2 936,25 kr
Each
Enheter
440 V ac, 460 V ac 400 V ac 15kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 114/64 Screw 267mm 267 x 150 x 215mm 150mm 215mm 50Hz 60Hz -
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