How to plan an LED window display: rails, connector pins and power supply

LED Pockets panels hang on thin cables from an electric rail. The cables carry both the panel and the power, so there are no visible wires. This guide shows how to plan the rails, when to join them with connector pins and how to choose the power supply, with worked examples.

The parts

  • Electric Rail Set – one 500 mm aluminium rail, 2 sliding connectors with hanging cables, 1 terminal plug and 2 expansion screws with wall plugs. The screws fix the rail to the ceiling or wall; they do not join rails.
  • Rail Connector Kit (2 pins) – two gold-plated pins that join two rails mechanically and electrically. One kit joins two rails. It is sold separately and is already included in the Window Kits and the Grand Set.
  • Power Supply Unit – 24 V DC, in 30 W, 60 W and 90 W versions, with an EU plug.
  • Panels – A5, A4, A3, A2 and the 953 x 350 mm banner, connected to each other with connector cables.

Rule 1: one rail per column

Each 500 mm rail carries one column of panels. When you join rails side by side, the columns are 500 mm apart: two rails give 1000 mm, three give 1500 mm, four give 2000 mm. For A4, the product page states up to 5 panels in one column.

The banner 953 x 350 is wider than one rail, so it always hangs on two joined rails with one power supply.

Rule 2: separate or joined rails

You can power each rail on its own, with its own power supply. Or you can join rails with connector pins and feed them from one power supply – for example four joined rails (2 m) on one 90 W supply. Joining means fewer power supplies and fewer plugs. To join a row of rails you need one connector kit for each joint: 2 rails need 1 kit, 3 rails need 2 kits, 4 rails need 3 kits.

Rule 3: add up the watts

Power consumption per panel:

  • A5 – 5 W
  • A4 – 7 W
  • A3 – 12 W
  • A2 – 21 W
  • Banner 953 x 350 – 20 W

Add up all panels on one power supply. The total must not be higher than the power supply rating: 30 W, 60 W or 90 W. A supply can be loaded close to its rating, for example 6 x A5 (30 W) on a 30 W unit. If the total is above 90 W, split the rails into two groups, each with its own supply.

Worked examples

  • 4 x A4, one column: 4 x 7 W = 28 W. One rail, one 30 W supply. This is the Display Set A4 with 4 panels.
  • 5 x A4, one column: 35 W. Above 30 W, so use 60 W.
  • 6 x A5: 6 x 5 W = 30 W. One 30 W supply.
  • 8 x A4, 2 columns of 4: 56 W. Two joined rails, one 60 W supply.
  • 12 x A4, 3 columns of 4: 84 W. Three joined rails (2 connector kits), one 90 W supply.
  • 6 x A3, 2 columns of 3: 6 x 12 W = 72 W. Two joined rails, one 90 W supply.
  • 15 x A4, 3 columns of 5: 105 W – above 90 W. Join two rails (10 panels, 70 W) on a 90 W supply and power the third rail (5 panels, 35 W) from a 60 W supply.
  • 16 x A4, 4 columns of 4: 112 W. Join the rails in pairs; each pair (56 W) runs on a 60 W supply.
  • Banner + 4 x A3: 20 W + 48 W = 68 W. Two joined rails, one supply above 60 W – that is 90 W. This is the Grand Set.
  • Mixed column, 1 x A2 + 2 x A4: 21 W + 14 W = 35 W. One rail, 60 W supply.

The Window Kit A4 and Window Kit A3 are built on exactly these rules, with rails, pins, cables and power supplies included.

Mounting and planning tips

  • Fix the rails to the ceiling or the top of the window frame with the expansion screws from the rail set.
  • Plan where the power supply will sit and where the nearest socket is before you drill.
  • Every panel can hang in portrait or landscape, and sizes can be mixed on the same rails – the watts still add up the same way.
  • Step-by-step assembly instructions (PDF) are on the Instructions page.

Larger or unusual windows

For several windows, long rails or a non-standard panel size, send us a project request with the window size and the layout you have in mind. Custom sizes can be made for projects. See all parts in Components.

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