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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Description Price 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 Stock No. 347-6652
Mfr. Part No.CM1000/A/US
MYR799.61
Each
units
230V ac 114.2V ac 1kVA - - Bobbin - 205mm 205 x 195 x 260mm 260mm 190mm - - -
RS Stock No. 158-7312
Mfr. Part No.E-JET 250
BrandBlock
MYR1,234.57
Each
units
230V ac 110 V ac 250VA Enclosed - - 3-Pin USA Socket, Cable with Plug 160mm 160 x 95 x 155mm 95mm 155mm 50Hz 60Hz -
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The E-JET step-down autotransformers allow the adjustment and ...
Description:
The E-JET step-down autotransformers allow the adjustment and operation of 110 V appliances connected to 230 V mains.Using autotransformers achieves an approx. 50% lower nominal rating compared to transformers with galvanically isolated windings.To ensure the output voltage to earth is ...
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 ...
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Description:
3TF power contactors from Siemens has been designed for switching and controlling squirrel cage and slip-ring motors as well as other AC loads, such as solenoids, capacitors, lighting loads, heating loads and transformer loads. SICOP contactors and bi-relays and have ...
High-quality multi-purpose panel mount isolating transformers from the ...
Description:
High-quality multi-purpose panel mount isolating transformers from the Block TT1 series. The transformers are designed for the safe isolation of the input and output sides. They can be used to set up protective separation as a protective measure. Safe galvanic ...