Drilling fluids mud agitator usually use small power motor less than 22kw (30hp). In this case, magnetic agitator usually used to control the mud agitator in drilling field. It is a kind of control panel.
Explosion proof mud agitator magnetic start mainly used for oil & gas drilling.
Un-Explosion proof mud agitator magnetic starter mainly used for water well drilling , HDD or other no dig drilling. But mostly, GN engineer will recommend user all choose EX control panel for all drilling site application.
As the cost will not be much different, but lifetime 3 times different.