Space-saving autotransformers from TRAMAG
Transformers without galvanic isolation
Autotransformers have only one coil and therefore no galvanic isolation between the primary and secondary circuit. In contrast to a transformers with two independent windings, a lower current flows here.
Compared to TRAMAG mains transformers, our autotransformers have a much more compact design and are therefore suitable for use in environments with limited space.
We provide autotransformers for the following industries
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Specifications of autotransformers from TRAMAG
Technical characteristics and quality features

Autotransformers: Applications
Autotransformers can be used whenever galvanic isolation from the feeding mains can be dispensed with. For safety reasons, autotransformers must not be used if persons can come into contact with the voltage.
Autotransformers: Technical characteristics
- Power rating 1 MVA
- Voltages up to 1,000 V
- Frequency typ. 50-60 Hz


Autotransformers: Quality characteristics
- DIN EN 60601-1
- DIN EN 61558-2-1
- DIN EN 61558-2-4
- DIN EN 61558-2-6
- UL/CSA