I have the Amprobe-branded version of the BM089 and sent some reasonable voltages through the uA DC mode as a test. I think their rating limit of 1,000VDC/VAC is correct, but above that it may have to sacrifice a component or two. I didn't try it...
My opinion on these safety ratings is that they are not something you should trust on a daily basis, no matter what some governing body states. Even measuring typical mains voltages a homeowner should have safety glasses along with insulated gloves and shoes, then only use one hand to take the measurement. If you go around using two hands to shove test leads into sockets on a regular basis without a second thought, then the one day you do it out of habit with wet hands and some test leads that maybe have some cracks in the insulation, you're going to have a bad day.
Of course if you're in the industrial space, you are going to be schooled up on proper PPE for this stuff, so honestly the ratings on the test equipment don't even matter for your personal safety, IMHO. Multiple protections will have to fail before there is an incident. So maybe measurement device protections, PPE, good habits, and maybe even a buddy to get help just in case!