Hello all,

I'm running a 3kw G110 unit.
Attached to this I have2 three phase 1.5 Kw fans. These are each individually protected.
The units have been working great for a few weeks.
Last week a unit failed for no apparent reason. The supply MCB feeding the unit trips imediately.I replaced the unit thinking it could of just been a faulty unit.
Yesterday another unit failed.
I've checked everything I can think of but am now at a loss. I'm hoping someone has had a similar issue or explanation to this problem.

Thanks