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Discuss Changing original 32Amp contactors for solid state relays? in the Electric Underfloor Heating Wiring area at ElectriciansForums.net

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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.
 
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