Switchboards of inner substation and external lighting (SL-48, SEL)

Switchboards SL-48 are designed for receiving and distributing of electric power voltage 380/220V three-phase AC, 50 Hz, as well as for occasional (not more than six times per hour) of switching and protection of single-phase off-line from overload and short circuit currents. Installed inside the switchboard room and differ from the external lighting switchboards SEL so that the apparatus is used as an introductory changeover switch to enable the work of the switchboard from two inlets. They are mounted on a vertical surface. Nominal mode is long.