Input and distribution devices VRU are intended for receiving, recording and distributing electrical energy in electrical installations of residential and public buildings, as well as for protecting distribution and group circuits outgoing from the VRU during overloads and short circuits.

They are used in networks with a voltage of 230/400 V, three-phase alternating current, 50 Hz with a solidly grounded neutral, to protect lines during overloads and short circuits, as well as for infrequent operational switching on and off of electrical networks, and are usually a grounded metal cabinet of a protected design, inside which the corresponding equipment can be located: switches, fuses, electricity meters, emergency input reserve panels, phase control relays, emergency lighting switches, phase load distribution sensors, voltmeters and ammeters.

The main parameters of the electrical network can be displayed on the switchboard door: voltage, current, protection operation, phase asymmetry, etc. Ammeters and energy meters are connected via current transformers.

The controller automatically collects data from electricity meters for further transmission to the control center; automatic monitoring of the status and operation of the cabinet included in the equipment is carried out.