A Ring Main Unit system comprises a variety of components, a few of which RMUs perform. These RMUs perform the functions of distributing power at a medium voltage. Moreover, the rest of the components in a RMUs are protective and enable flexible operations. The compact design, low maintenance, and the safety-critical and operational flexible features of RMUs makes them suitable in urban and industrial set ups. The systems are designed to reduce operational downtimes and easily interlocking with existing grids to improve customers in different cultural environments.