Changing original 32Amp contactors for solid state relays?

[Yonny24]

A standard DIN module is 17.5mm wide. So with two power meters that is 35mm - one for L1 and one for L2. Which leaves 220-35 = 185mm

A double pole 20A ABB contactor is a standard DIN module -the spec says 18mm. So you could fit in up to 10 of them.

ABB ESB20-20N-01 - https://new.abb.com/products/1SBE121111R0120/esb20-20n-01-installation-contactor

Could you have a think about how you want the zones arranged knowing that you have room for circa 12 standard DIN modules - and do you want a power meter for each zone?

Hi Marconi,

I will visit my local home department store to see what they have available in terms of contactors first. We don't always have a wide selection of products and can be pricey.

I should be able to fit a new neutral cable into one or 2 of the rooms as you mentioned earlier to separate the 2 bedrooms but the rooms further away could be problematic if I need to fit more cables. I've had issues trying to get my fishline down some of the conduits. Quite a spaghetti junction! Took me 2 days to get the cat6 from my office down to the living room!

I'll get back to you.
Thanks very much for all your time on this.

 

[Yonny24]

Sorry been absent for a while. Worries with work and the pandemic etc.
Been difficult to find suitable contactors at a reasonable price. Found some 4 pole contactors. Shouldn't be any issue swapping 2 x 2 pole contactors for 1 x 4 pole should it? 2 live and 2 neutral inputs and outputs. Each 2 pole is only drawing about 10 amps. The 4 pole is a a 40amp.

Thanks

 

[marconi]

The 4 pole sounds fine. If you send me its details I will give it the once over.

 

[Yonny24]

The 4 pole sounds fine. If you send me its details I will give it the once over.

I believe it is the same one as this:

CONTACTOR MODULAR 4P 40A 230V MC1-40 – Castells online

www.subastasclick.com

Many thanks

Was going to leave it for this year but the buzzing from the downstairs is really quite annoying now as we have the heating on more frequently as winter is approaching here in the Southern Hemisphere.

 

[marconi]

I cannot read the make - what is it?

 

[Yonny24]

I cannot read the make - what is it?

Can't find much info on it but the listing says 'Carfil'. CF2804

 

[marconi]

At first blush they look rather cheap and cheerful. Here is a proposal: I will send you some ABB silent relays and perhaps you will make a donation to a children's charity in Uruguay akin to the UK's NSPCC - what say you?

 

[Yonny24]

At first blush they look rather cheap and cheerful. Here is a proposal: I will send you some ABB silent relays and perhaps you will make a donation to a children's charity in Uruguay akin to the UK's NSPCC - what say you?

Wow really appreciate the offer. Very kind of you indeed.

Unfortunately, the customs rules here are very strict and could end up paying a fortune in taxes and import duty fees requiring proof of purchase etc. List goes on of extra costs on top of the 60% tax.
This is why even cheap chinese goods are expensive here.

I'll probably just go for this model and try one first.

Kind regards

 

[marconi]

I understand. I will do some research tomorrow morning over a coffee. At 10 A and rated at 40 A they are most likely suitable - but I thought you wanted quiet contactors(*)

I, and maybe many others, have a bit of a downer on Chinese products at the moment if that is where this contactor is from. I find Italian made stuff good value - but then I have Italian ancestry with the surname 'Solari' - so I may be biased ;-)

* - We could try to be clever and put good but noisy contactors inside soundproofed enclosures? I'll have a look at materials and ways to attenuate the annoying hum. At first pass I wonder about some lead and rubber combination.

 

[Yonny24]

Yes I would prefer fairly quiet contactors. Not sure how much noise these would make tbh.

One out of the 3 downstairs is really buzzing loudly (the buzzing varies from day to day, from quite loud to a sound like its vibrating out of the module box), obviously not very well.

As you know the one upstairs is a 4 pole ABB and you cannot hear it at all. Super silent.

I have asked the supplier how much noise they produce.
Update: He's just replied and said they are not quiet.
[automerge]1591897472[/automerge]
oh look in this moment new models have appeared online.

Steck

STECK. E tudo se liga!

www.steckgroup.com

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