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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Omschrijving Prijs 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-stocknr. 504-206
FabrikantRS PRO
183,70 €
Each
Aantal stuks
220 V ac, 230 V ac, 240 V ac 115V ac 1kVA Enclosed Chassis Mount, Floor Standing, Wall Mount - - 115mm 115 x 192 x 137mm 192mm 137mm 50Hz 60Hz -
RS-stocknr. 504-189
FabrikantRS PRO
74,99 €
Each
Aantal stuks
220 V ac, 230 V ac, 240 V ac 115V ac 150VA Enclosed Chassis Mount, Floor Standing, Wall Mount - - 73mm 73 x 120 x 89mm 120mm 89mm 50Hz 60Hz -
RS-stocknr. 504-183
FabrikantRS PRO
76,20 €
Each
Aantal stuks
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-stocknr. 504-202
FabrikantRS PRO
54,59 €
Each
Aantal stuks
230V ac 115V ac 50VA Enclosed Chassis Mount, Floor Standing, Wall Mount - - 58mm 58 x 63 x 70mm 63mm 70mm 50Hz 60Hz -
RS-stocknr. 504-195
FabrikantRS PRO
119,47 €
Each
Aantal stuks
220 V ac, 230 V ac, 240 V ac 115V ac 500VA Enclosed Chassis Mount, Floor Standing, Wall Mount - - 98mm 98 x 145 x 118mm 145mm 118mm 50Hz 60Hz -
RS-stocknr. 504-199
FabrikantRS PRO
85,72 €
Each
Aantal stuks
220 V ac, 230 V ac, 240 V ac 115V ac 250VA Enclosed Chassis Mount, Floor Standing, Wall Mount - - 81mm 81 x 136 x 100mm 136mm 100mm 50Hz 60Hz -
RS-stocknr. 738-7824
FabrikantnummerAT3 3,5-24/35-4
FabrikantBlock
249,90 €
Each
Aantal stuks
240 V ac, 346 V ac 400 V ac 3.5kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 114/40 Screw 267mm 267 x 125 x 215mm 125mm 215mm 50Hz 60Hz -
RS-stocknr. 293-2656
FabrikantnummerAIM 1.6/0.8
FabrikantBlock
45,95 €
Each
Aantal stuks
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-stocknr. 158-7340
FabrikantnummerEJET1000
FabrikantBlock
398,09 €
Each
Aantal stuks
230V ac 110 V ac 1000VA Enclosed Floor Standing - Cable 244mm 244 x 143 x 197mm 143mm 197mm 50Hz 60Hz -
RS-stocknr. 310-1156
FabrikantnummerSAT200
FabrikantBlock
66,34 €
Each
Aantal stuks
230V ac 115 V ac 200VA - - - - 166mm 166 x 76 x 77mm 76mm 77mm - - -
RS-stocknr. 347-6668
FabrikantnummerCM2000/A/US
155,27 €
Each
Aantal stuks
230V ac 115V ac 2kVA - - Bobbin - 205mm 205 x 195 x 260mm 260mm 190mm - - -
RS-stocknr. 738-7795
FabrikantnummerAT3 2-22/23-4
FabrikantBlock
204,09 €
Each
Aantal stuks
220 V ac, 230 V ac 400 V ac 2kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 90/51,5 Screw 220mm 220 x 125 x 175mm 125mm 175mm 50Hz 60Hz -
RS-stocknr. 158-7312
FabrikantnummerE-JET 250
FabrikantBlock
228,24 €
Each
Aantal stuks
230V ac 110 V ac 250VA Enclosed - - 3-Pin USA Socket, Cable with Plug 160mm 160 x 95 x 155mm 95mm 155mm 50Hz 60Hz -
RS-stocknr. 293-2678
FabrikantnummerAIM 5.0/2.5
FabrikantBlock
78,19 €
Each
Aantal stuks
115 V ac, 230 V ac 115 V ac, 220 V ac, 230 V ac - Enclosed Panel Mount - Screw 223mm 223 x 97 x 117mm 97mm 117mm 50Hz 60Hz -20°C
RS-stocknr. 158-7328
FabrikantnummerEJET500
FabrikantBlock
293,66 €
Each
Aantal stuks
230V ac 110 V ac 500VA Enclosed - - Cable 180mm 180 x 126 x 192mm 126mm 192mm 50Hz 60Hz -
RS-stocknr. 293-2662
FabrikantnummerAIM 3.2/1.6
FabrikantBlock
64,10 €
Each
Aantal stuks
115 V ac, 230 V ac 115 V ac, 220 V ac, 230 V ac, 240 V ac - Enclosed Panel Mount - Screw 223mm 223 x 97 x 117mm 97mm 117mm 50Hz 60Hz -20°C
RS-stocknr. 310-1162
FabrikantnummerSAT300
FabrikantBlock
89,18 €
Each
Aantal stuks
230V ac 115 V ac 300VA - - - - 223mm 223 x 97 x 117mm 97mm 117mm - - -
RS-stocknr. 738-7846
FabrikantnummerAT3 10-20/21-4
FabrikantBlock
604,24 €
Each
Aantal stuks
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-stocknr. 310-1140
FabrikantnummerSAT100
FabrikantBlock
65,66 €
Each
Aantal stuks
230V ac 115 V ac 100VA - - - - 166mm 166 x 76 x 77mm 76mm 77mm - - -
RS-stocknr. 738-7884
FabrikantnummerAT3 15-48/50-4
FabrikantBlock
377,71 €
Each
Aantal stuks
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 -
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