Product suggestion: relay board with bigger relays

[lulu01]

Hello,

I have three H32B Pro relay boards + one H32B. As I need to have some larger inductive loads (motors for large covers) and LEDs with a high in-rush current, some of the relays already failed and I will need to replace them + add an extra KC868-E16 boards or two. This takes up a lot of space and becomes expensive.

You should consider having in the product range a new board with a controller + larger relays like the ones from KC868-E16. The competition does this, for instance Dovit only has relay modules with Finder 40 series relays.

   

[admin]

Do you think 10A or 12A relay is ok?

[lulu01]

I guess you could offer both options easily if you use relays with the same physical pinout, and if you use sockets. You could change it easily in the factory, or the user could change their relays themselves.

Myself I would even go with 16A.

[admin]

different current version relay size is different. so need re design PCB. if need 16A, suggest chose KC868-E16x series board. that have ESP32 on PCB.

[lulu01]

I am looking at options to add high-inrush current relays in my installation, and pilot them with the H32B Pro. Can you recommend relays that have DIN rail holders, and that are very slim? For instance the Finder 46 series are too wide - I can only install 26 of them in the available space, but I need around 40 or 45... The KC868-E16x is also too large for my installation. thank you!

The load I need to power with it is domestic lighting including LED, and general purpose sockets in the house.

[admin]

check this video: https://youtu.be/v-9r0qL2ZqI whether is you need.

[lulu01]

Thank you! The HF41F relay with T41F-2 DIN rail holder looks interesting. For ceiling lights, 6A is enough. Do you expect this to resist a higer inrush current than the relays that are installed in the H32B Pro?

Do you know other slim relays that handle 10A or 16A?

[admin]

slim relay MAX 6A, in video, there is a 12A relay. we can't use large current relay, because of the PCB size will be very big.
if you want use 10A with 32 channel relay, you can see the KC868-A32 board, the relay is MAX10A AC250V.

[lulu01]

The 12V relay in the video is too wide for my need (15.5 mm).

I can see the A32 board has JQC-3FF relays. Do you think this relay has a better inrush resistance than the HF46F-G on the H32B Pro?

In fact I am starting to understand that you should not use bigger current relays on the boards, but you should use relays with Silver Tin Oxide (AgSnO2) or Silver Cadmium Oxide (AgCdO) instead of Silver Nickel (AgNi) for the contacts. It would avoid using extra high-current relays besides the board itself.

[admin]

JQC-3FF relay MAX10A for AC220v load.
HF46F-G relay MAX7A for AC220v load. But size smaller.