Medium-voltage switchgear available in markets such as Europe and Asia is manufactured in accordance with standards established by the International Electrotechnical Commission (IEC). However, these switchgear units feature rear-side cable connections, which makes the installation and maintenance of such equipment particularly challenging.

Furthermore, this type of switchgear utilizes "epoxy-pillar-type" current transformers mounted at the rear; should a fault occur, this configuration renders them impossible to replace in the field.