Large motors and RCD/MCB problem

Luckily I'm not directly involved with the installation of these, its subcontractor's problem , just interested bystander, in what would be done in the electrical world to cure this problem. A batch of local houses as part ofa marine flood protection scheme have had sumps and pumps installed,one per house, about 2KW motors surprisingly. One of the residents tested one setup , with buckets of water to trigger the pump. It cut out at the mini "consumer unit" installed utility side of the normal consumer unit. All the others are likely to do the same. I assume it is large inductor , current inrush problem, like the notorious spin-cycle of washing machines. Inductive unbalancing the RCD or short duration over-current of the MCB. In my sort of electronics world, for torroidal transformers an NTC thermistor would be included to avoid down-rating RCD or uprating MCB. What would they do in the electrical world, anything like NTC thermistors?