Clip-on current transformers for primary rated currents from 30 A to 7,500 A, secondary rated current 5 A or 1 A, in accuracy classes 0.2s, 0.2, 0.5s, 0.5 and 1. All devices are supplied complete with the necessary fixing materials. As an option, primary conductor bars (electrolytic copper, nickel-plated) can be supplied according to the bar window, including DIN 933 screws, complete with nuts, washers and spring washers for mounting in busbars or similar.