Clipsal C-Bus Dimmer DIN Rail Mounted, Universal, 240V AC, 4 Channel, 2.5A, With C-Bus Power Supply

Clipsal C-Bus Dimmer DIN Rail Mounted, Universal, 240V AC, 4 Channel, 2.5A, With C-Bus Power Supply

Clipsal C-Bus Dimmer DIN Rail Mounted, Universal, 240V AC, 4 Channel, 2.5A, With C-Bus Power Supply

Item Number: L5504D2U

Product Dimensions

Width icon

Width216 mm

Height icon

Height92 mm

Depth icon

Depth63 mm



Qty UoM EAN Colour



Sustainable offer status

Green Premium product



Product brand


Product or component type


Device application



[Ue] rated operational voltage

  • 220...240 V AC for dimmer
  • 15...36 V DC for C-Bus

Communication network type


Local signalling


Number of channels


Connector type

  • RJ45 for C-Bus
  • RJ45 for remote override

Mounting support

DIN rail

Clamping connection capacity

  • 1 x 2.5 mm²
  • 2 x 1.5 mm²


216 mm


92 mm


63 mm

Net weight

593 g

Ambient air temperature for operation

0...45 °C

Relative humidity

10...95 %

REACh Regulation

Free of Substances of Very High Concern above the threshold

REACh free of SVHC


EU RoHS Directive


Toxic heavy metal free


Mercury free


RoHS exemption information


China RoHS Regulation

 Pro-active China RoHS declaration (out of China RoHS legal scope)

Environmental Disclosure


Circularity Profile


Device presentation

basic element

Load type

  • incandescent
  • halogen lamp
  • low voltage lamp with electronic transformer
  • low voltage lamp with iron-core transformer
  • LED lamp

Dimmer type

  • leading edge
  • trailing edge


Standby consumption

20 W

Power supply output current

200 mA

Network frequency

47...53 Hz

Maximum number of supported devices

10 per network

Input impedance

50 kOhm at 1-1 kHz

Isolation voltage

3.75 kV from C-Bus to mains

Starting time

5 s

Software function

  • select network clock
  • select network burden
  • select time delay range

Number of modules


Unit Type of Package 1


Number of Units in Package 1


Package 1 Weight

702.0 g

Package 1 Height

10 cm

Package 1 width

10.5 cm

Package 1 Length

22.5 cm


The product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins

Load current

2.5 A per channel
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Frequently Asked Questions

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Is part number L5504D2U suitable for dimming LED?

Yes. The L5504D2U is suitable for LED dimming.

Key Features

  • 4 channel Leading Edge/Trailing Edge
  • 12M DIN modules wide
  • 4 channels of 2.5A rating
  • Suitable for low voltage electronic transformers, incandescent lamps and low voltage lamps with iron core transformersl
  • automatic load sensing
  • software selectable network burden and C-Bus system clock
  • inbuilt 200mA C-Bus power supply
  • C-Bus Learn Enabled
  • for use with Leading Edge or Trailing Edge compatible low voltage transformers
  • 215 mm x 85 mm x 65 mm
for more information, please visit:https://www.clipsal.com/Trade/Products/ProductDetail?catno=L5504D2U


What is the current rating per channel for an L5504D2UP?

What type of LED's can be used on C-Bus Dimmers?

Firstly you will need to confirm whether your C-Bus system contains C-Bus Leading Edge Dimmers or C-Bus Universal Dimmers, You may need to consult with your EcoXpert in Light and Room Control which one(s) you have if unsure. 

The general recommendations for LED compatibility with C-Bus Dimmers is as follows
1) Ensure your LED's have a dedicated LED Driver (electronic transformer) that supports your C-Bus Dimmer type
2) Bench test that the LED Driver is of good quality and works as expected at your site
3) C-Bus Dimmer channels require >25W of load if less is connected to a specific channel that channel will require the addition of a 31LCDA (Load Corrective Device)
4) If the dimming range of the LED fittings is specified by the manufacturer - the installer can programmer the Min/Max settings of the C-Bus Dimming channel to match the LED fittings dimming range.

C-Bus Leading Edge Dimmers will require LED's which have electronic transformers (LED Driver) which support Leading Edge AC phase control dimming (as noted in the compatible loads section of the installation manual)

C-Bus Universal Dimmers will require LED's which have electronic transformers (LED Driver) which supports Trailing Edge AC phase control dimming (as noted in the compatible loads section of the installation manual).
Although Universal Dimmers can support leading OR trailing edge AC phase control dimming it needs to be exclusively one or the other (NOT BOTH). As such LED Drivers which note LE/TE LED Driver are NOT suitable for the Universal Dimmer. 
IMPORTANT: Clipsal by Schneider Electric & Schneider Electric DO NOT make LED's which are compatible with C-Bus NOR can we recommend specific LED Drivers for your C-Bus Dimmer type as LED Dimming and Driver technology is continually changing. The above is a guideline to assist you choose a compatible LED with dedicated LED Driver that supports your dimmer in question. As noted above please have your EcoXpert in Light and Room Control bench test LED Fittings and LED Driver for suitability on your C-Bus Network.  

Why is there still 240V on the C-Bus dimmer output when it has been switched off from C-Bus?

C-Bus dimmer is controlled by Triac/Mosffet and due to this has a small leakage current.

This small leakage current will impose main voltage out on the dimmer output/load even those the channel is switched off via C-Bus.

We advise that the whole dimmer needs to be switched off before maintenance takes place.