Replacing 500mA STD universal dimmer RCD

[LakShak]

Hi,

The attached photo will show you the current RCD which is connected to 5 LED lights.

There are around 12 of these in total, which controls the commercial shops lighting, with a single switch for each lighting circuit.

The RCD from ABB costs up to £500 and also apparently needs someone to program it, which costs a further £1000.

Can I replace all of them with a more cost effective option?

Thanks for your help!

 

[SJD]

Your photo appears to show several banks of ABB dimmer modules (STD-500, or STD-500U). I am not seeing and RCD's that you mention (residual current device).

You don't say why you want to replace them all - has one or more failed?
What is the lighting on these circuits?

If the lighting is halogen, quite possibly you can save lots of money by changing to LED lighting.

I'm a bit puzzled as to why it would cost £1000 to program one of these, a quick glance at the instructions suggest it is not difficult and would not take long, though I could be mistaken. Perhaps someone is taking advantage and charging inflated prices.

 

[LakShak]

Your photo appears to show several banks of ABB dimmer modules (STD-500, or STD-500U). I am not seeing and RCD's that you mention (residual current device).

You don't say why you want to replace them all - has one or more failed?
What is the lighting on these circuits?

If the lighting is halogen, quite possibly you can save lots of money by changing to LED lighting.

I'm a bit puzzled as to why it would cost £1000 to program one of these, a quick glance at the instructions suggest it is not difficult and would not take long, though I could be mistaken. Perhaps someone is taking advantage and charging inflated prices.

One has failed. 5 lights per circuit. Already led I believe.

Could I replace it for any other dimmer module?

 

[SJD]

One has failed. 5 lights per circuit. Already led I believe.
Could I replace it for any other dimmer module?

Firstly, you don't give much of a clue as to what these lights are - 5 lights per circuit could be anything, so difficult to comment much further.

I notice the spec for the STD-500U says 60 to 500W, so if you are using it with LEDs below 60W total it might well not be happy - are you even sure it has actually failed, and not just feeling unhappy about not having enough load to drive?

Equally, dimmers often have to be downrated significantly for LED loads, which can have a high inrush current. So depending on the load, it is also possible the LEDs have overloaded and maybe damaged the module.

Quite likely you could replace with some other dimmer, not any other, but one rated for the loading (see my first comment above).

 

[freddo]

The dimmer shown seems to just be taking L, N and a retractive switch input then providing a dimmed L output at the top. These don't seem to be connected to a digital controller only standard push buttons, is that correct?