Additional measuring elements are required for measuring current higher than 5A. Some of the most popular are current transformers, WAGO currently has 32 to 2500 non-volatile current transformers, if the customer can not disconnect the load and there is no way to disconnect the cables, they use disconnecting current transformers that enclose the measured cable. WAGO current transformers have spring connection terminals and are attached to the measured cable. It is possible to mount the current transformer directly on the DIN35 rail, and the ultra-compact 32A mounts directly on the wires to the automatic switch, because they are occupied with the same width as the machine. High current (500A and 2000A) can be used with Rogovsky loops, which are several times smaller than the transformer, easy and convenient to install without removing the load, precise.