elmex Multi Level Terminals are the perfect solution where space is a constraint and high density wiring is needed. The compact design of these Terminals with 6 mm thickness allows double wiring density and reducing the total number of terminal blocks to half. elmex three level terminal blocks can be used for high-density wiring and for wiring special equipments such as proximity sensors. DUSD4 has a special link attached to the middle and lower level to facilitate the interconnection between adjacent terminal blocks, DU3D4 and DUSD4. The negative and positive circuits can be easily bridged together and then connected to a power source with DU3D4 terminal.