Installing different ampere 3 phase electric rotary switches? Is this problematic?

[Queenbee85]

Don't know whether this is the correct forum for posting this, so please forgive me if this is the wrong section...
I had some electrical issues in my home(Chennai ) last year with constant tripping of circuit when we use the Aircon or other equipment ..My Dad called an electrician who diagnosed it and told one of the 3 phase rotary switches is malfunctioning and he suggested us to replace all the 3 rotary switches instead of the single malfunctioning one...So we replaced it and the problems went away. Now after an year we are seeing unique problems with constant voltage fluctuations and flickering lights.
So i opened and checked our DB box inside our home and saw that the electrician has installed two 63amp phase rotary switch and one single 40amp rotary switch which is completely uncommon...
Now I don't have indepth knowledge regarding RCCB/MCB or 3 phase switch, but as far as i understand ,all the 3 rotary switch should be of the same Ampere rating and not different.

Can someone help me understand with what's happening here? Can having different ampere phase switches cause voltage or any power issues?

 

[adder]

Your Escom meter is likely rated for 32A per phase. So the rotary switch is already overrated. 40 A is like 9 kW and other 63 A phases are rated for 14 kW. I doubt you will pull remotely close to it's rated power unless you have a EV.

Further more the switch is a switch, it's not the cause of your voltage fluctuations and light's flickering, unless you exceed its rated rating.

Voltage fluctuations between phases are caused by a weak or poor neutral connection either in your house or in a electricity pole or even in the transformer.

Lights flickering can be due to any number of reason like when a high powered device with high inductive load is switched On.
Loose contacts, dead lizards shorting live and neutral some where, poor light switches.