Need your advise.

[heyheyhey]

1. what's MC?  MCB?
if you connect AC contactor with KC868-H32B, need install RC snubber.

Thanks for your fast replay

1. magnetic contactor.

Equipment installation is as follow.

router - H32b - 6 AC contactor - 6 equipments 
                    - 26 direct connections for equipments(using low power)

and turn on, turn off several times, H32b(tcp, mqtt) goes down.

I have four h32b. changing another and try, also goes down.

2. Is it possible without contactor and controlling switch?

3. I think relay module in H32b is independent with load, Is wrong electrical load connection make H32b to be down?

4. Generally what circumstances does it make H32b go down?    

   

Best regard!