These plates are designed to assembly electric components. 

Wide of electrical components assembled should be 45mm for UMP45A and 54mm for UMP54A.

Advantatges are: 

• Easy movement. Rails of the plate move just pressing levers. 
• Plate can be fixed by 2 DIN Rail spacing 100 or 125mm, just with one DIN Rail or with M5 screws. 
• Plates can be united by clips.