DRU-M-1 - Single- and three-phase toroidal variable transformers


Three-phase toroidal variable transformer according to DIN VDE 0552 designed as autotransformer (auto-connected winding), with attached motor drive 230 V, 50 Hz. Manipulating time approx. 27 seconds. Limit switches in min. and max. positions. Terminal connection, connection group Yn0, prepared for safety class I, 50/60 Hz, ta 40°C.

IR: 1,25 - 3,15 AUPRI: 400 VUSEC: 0 - 450 V

Download data sheet

Product images

* Other manipulating times on request

Variants overview

Rated current Article number Measurements Weight
Primary current Rated capacity PRI 400 V
SEC 400 V
PRI 400 V
SEC 450 V
a x b x c / L x B x HCU kgGes. kg
1860 200 x 260 x 27009
21380 300 x 260 x 290014
32450 300 x 360 x 290017
Request product

Contact us!

Are you still looking for the right product? Contact us now. We work with you to develop the right solution, optimally tailored to your requirements.


The easiest way to find a suitable transformer, choke or filter for your application is to use our product filters. The filter settings, such as input and output voltage or IP code, allow you to select your individual parameters to find the right product from our extensive assortment.

By the way: You can use the contact form to contact our sales team to inquire about individual offers and custom solutions.

Discover our product filters:

Select transformers     Select chokes or filters