Also, always check the incoming voltage. Many drives are rated at 230v. I had high failure rate on Mitsubishi VFD after contacting the factory, they told me 230 was the top voltage that their drive will stand. The 2 locations with the failure it was 244. After adding bucking transformers (3ph) the failures stopped. As we know sometimes the supply voltage can go up some, so see what the top supply voltage the starter is designed for and make sure you are under that.