DISTRIBUTION BOX, IN PARTICULAR, FOR LIGHTING CABLES IN TUNNELS Russian patent published in 2014 - IPC H02G3/08 H01R4/24 

FIELD: electricity.

SUBSTANCE: distribution box, in particular, for lighting cables in tunnels includes a body equipped with a cover. The body comprises an electrical socket. A connection device inside the body connects an electrical socket with a pair of supply wires of a power supply line, which is carried out with the help of the distribution box. The connection device includes one or more cut-in contacts. Each cut-in contact engages with the appropriate supply wire, not cutting it. At the same time each cut-in contact comprises multiple sharp ledges arranged along the direction of the appropriate connected wire and distant from each other in the longitudinal direction.

EFFECT: provision of continuous power supply of the entire line even in case of fire and possible damage of a box body.