I'm surprised to hear of those MCBs used for flu lamp switching I was told on no account use MCBs to switch that type of load because the inductive voltage kick can cause flash overs I guess older gear is built better as said above. I know that trip switches can become less reliable with frequent use. We had one at my old work which was tripped by an overload maybe 10 times a week and it soon got oversensitive thats a bit extreme I know but it may start to be an issue if they are used for lighting testing
I'm surprised to hear of those MCBs used for flu lamp switching I was told on no account use MCBs to switch that type of load because the inductive voltage kick can cause flash overs I guess older gear is built better as said above. I know that trip switches can become less reliable with frequent use. We had one at my old work which was tripped by an overload maybe 10 times a week and it soon got oversensitive thats a bit extreme I know but it may start to be an issue if they are used for lighting testing
