Trenntrafos, Isoliertrafos, KKS Trafos mit TSRL einschaltenTSRL for separation transformersTSRL pour les transfos du separation
Manufacturer and Contractor:

The mostly application of the TSR is to avoid the inrush current impulses at switch on and after voltage dips. The lower picture shows a typical separation transformer for a shielded room, assembled with a TSRL.

The TSRL in top right position is fixed on the Transformer.
single phase transformers softstart