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

...
Lees meer Lees minder

Filters

41 - 54 van 54 producten worden weergegeven
Resultaten per pagina
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. 738-7900
FabrikantnummerAT3 25-22/23-4
FabrikantBlock
1.217,77 €
Each
Aantal stuks
220 V ac, 230 V ac 400 V ac 25kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 210/88 Screw 480mm 480 x 220 x 440mm 220mm 440mm 50Hz 60Hz -
RS-stocknr. 738-7922
FabrikantnummerAT3 25-69-4
FabrikantBlock
742,99 €
Each
Aantal stuks
690V ac 400 V ac 25kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 210/73 Screw 480mm 480 x 192 x 395mm 192mm 395mm 50Hz 60Hz -
RS-stocknr. 436-9858
FabrikantnummerAIM16/8
FabrikantBlock
228,54 €
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 284mm 283 x 200 x 165mm 165mm 200mm 50Hz 60Hz -20°C
RS-stocknr. 738-7919
FabrikantnummerAT3 25-48/50-4
FabrikantBlock
543,72 €
Each
Aantal stuks
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-stocknr. 328-8051
FabrikantnummerSAT 500
FabrikantBlock
93,57 €
Each
Aantal stuks
230V ac 115 V ac 500VA - - - - 223mm 223 x 97 x 117mm 97mm 117mm - - -
RS-stocknr. 738-7802
FabrikantnummerAT3 2-44/46-4
FabrikantBlock
123,76 €
Each
Aantal stuks
440 V ac, 460 V ac 400 V ac 2kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 75/26,5 Screw 155mm 155 x 95 x 155mm 95mm 155mm 50Hz 60Hz -
RS-stocknr. 738-7878
FabrikantnummerAT3 15-24/35-4
FabrikantBlock
661,13 €
Each
Aantal stuks
240 V ac, 346 V ac 400 V ac 15kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 180/63 Screw 410mm 410 x 175 x 345mm 175mm 345mm 50Hz 60Hz -
RS-stocknr. 738-7865
FabrikantnummerAT3 10-48/50-4
FabrikantBlock
304,72 €
Each
Aantal stuks
480 V ac, 500 V ac 400 V ac 10kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 114/64 Screw 267mm 267 x 150 x 220mm 150mm 220mm 50Hz 60Hz -
RS-stocknr. 738-7874
FabrikantnummerAT3 15-22/23-4
FabrikantBlock
490,57 €
Each
Aantal stuks
220 V ac, 230 V ac 400 V ac 15kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 180/78 Screw 410mm 410 x 195 x 345mm 195mm 345mm 50Hz 60Hz -
RS-stocknr. 738-7837
FabrikantnummerAT3 3,5-44/46-4
FabrikantBlock
146,22 €
Each
Aantal stuks
460 V ac, 3 x 440 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-stocknr. 738-7916
FabrikantnummerAT3 25-44/46-4
FabrikantBlock
414,35 €
Each
Aantal stuks
440 V ac, 460 V ac 400 V ac 25kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 132/72 Screw 315mm 315 x 185 x 255mm 185mm 255mm 50Hz 60Hz -
RS-stocknr. 738-7806
FabrikantnummerAT3 2-48/50-4
FabrikantBlock
147,10 €
Each
Aantal stuks
480 V ac, 500 V ac 400 V ac 2kVA 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-stocknr. 738-7830
FabrikantnummerAT3 3,5-48/50-4
FabrikantBlock
187,42 €
Each
Aantal stuks
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-stocknr. 738-7890
FabrikantnummerAT3 25-20/21-4
FabrikantBlock
1.279,01 €
Each
Aantal stuks
200 V ac, 208 V ac 400 V ac 25kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 210/88 Screw 480mm 480 x 220 x 440mm 220mm 440mm 50Hz 60Hz -
Related Products
Portable encapsulated autowound transformers providing a 115Vac supply ...
Description:
Portable encapsulated autowound transformers providing a 115Vac supply via a standard 3-pin US style socket. 230Vac input, 115Vac output 50/60HzEncapsulated in plastic housingMounting holes for permanent installation if requiredOutput fuse protectedInput connection: 2m 3-core cable, 13A (BS1363) plugOutput ...
From Block, these short circuit proof encapsulated autowound ...
Description:
From Block, these short circuit proof encapsulated autowound transformers allow step up or step down of mains voltage at 50/60 Hz. Featuring easy to install mounting holes, screw terminal connections with strain relief for connecting leads, a robust and reliable ...
Range of high efficiency low heat loss 3 ...
Description:
Range of high efficiency low heat loss 3 phase auto transformers. Common input and output windingsEasy installation-mounting holes providedScrew terminal connectionsReverse operation posibleTransformers tested to EN 61558-2-13BLOCKIMPEX vacuum impregnation.
Range of high efficiency low heat loss 3 ...
Description:
Range of high efficiency low heat loss 3 phase auto transformers. Common input and output windingsEasy installation-mounting holes providedScrew terminal connectionsReverse operation posibleTransformers tested to EN 61558-2-13BLOCKIMPEX vacuum impregnation.