Breimer-Roth produces Single-Phase and Three-Phase Toroidal Transformers as Toroidal Autotransformers Made in Germany with a design power of up to 10000 VA. The input and output voltage can be from 1 Volt up to 1000 Volt.

On customer request input voltage and output voltage with or without taps and additional separate windings as well as the construction power of the transformer can be adapted, standard in the frequency 50/60 Hz, other frequency ranges are of course possible. Optionally we also offter suitable housings in protection class IP 23 – IP 65

The Toroidal Transformer is a type of Transformer whose core is made in form of a toroid. The toroid consists of soft iron or special ceramic ferrites. In a Toroidal Transformer, the windings are wound over the toroid, electrically insulated. The turns of copper wire are evenly distributed over the entire toroid, therefore the magnetic flux leakage is distributed over the entire core in a toroidal transformer with good magnetic coupling. The magnetic resistance in the toroidal transformer, caused by the smallest possible air gap in the core, is almost non-existent due to the shape of the core. This can be proven by the low no-load current and an almost vertical hysteresis curve. However, toroidal transformers generate very high current peaks when switched on, which is why an inrush current limiter is advantageous for Toroidal Transformers.