Well it appears to me to be a 3 phase motor running @ 1,776 volts alternating current and ms1 I believe is motor switch or magnetic switch 1 that then triggers a 24 volt direct current relay to possibly reverse the motor. But they are right no stopping for sure!

Well it appears to me to be a 3 phase motor running @ 1,776 volts alternating current and ms1 I belive is motor switch 1 that then triggers a 24 volt direct current relay to possibly reverse the motor. But they are right no stopping for sure!