Vertical potting boxes for toroidal cores. Versions "VRS" and "VR/PR" preferably used for printed circuits. Boxes are available for core sizes diameter 12,5 mm to 35 mm, see catalog pages 154 - 155.
For version "VR/SR" matching pin frames are available as accessories. Pin frames enable direct extension of wires or additional pins for PCB mounting, see catalog pages 156.