Current transformers type CT4 are designed for interior application. They are made in a form of a ring core, closed in a well-knit and rigid case. It gives an effective protection against moisture and undesirable interference in the structure.
The installation of CT4 transformers does not require the dismantling of the busbar system. This is possible by directly placing the transformers to the busbar using the primary terminals (dimensions: 24x4 mm). Current transmitters also have mounting brackets, which allow the device to be mounted, for example, on the mounting plate. It is also possible to mount the transformers on the TH rail, using special equipment (not in set). In the upper part of the transformer there are terminals of the secondary winding, protected by a cover suitable for sealing.