7.5KW motor, three-phase, rated working current is probably, here is the power factor

P=3UI*COS&, calculated to be about 14A,

When selecting a thermal relay, the rated 嗲 Liu is greater than the rated current of the motor, and then the operating current is adjusted to 1.15 times the rated current of the motor, so that it can play a good protection. Calculate it to 15.4, adjust your thermal relay. If the range is not good, it can only be adjusted to the lowest range, which is 16