How to select the type of thermal relay, air switch, AC contactor it needs based on the motor parameters? It is better to give the answer step by step, thanks.

Contactors choose rated current 1.5 times the thermal relay choose rated current 0.95-1.5 times the air open choose rated current 1.5-2.5 times Model Y315M1-6 motor: contactor CJ20-160A \380v thermal relay JR20-160L thermal overload relay air open Chint plastic case circuit breaker NM1-225S/ 4300 225A Model Y315M1-6 motor: Contactor: CJ20-100A\380v Thermal relay: JR20-160 100A Open: Chint plastic shell circuit breaker NM1-225S/4300 100A High voltage motors: the cable adopts the 3 * 185 + 1 * 90 copper cable two parallel use as for the anti-trip relay can be based on the site of the circuit breaker tripping, closing coil selection. Circuit breaker tripping, closing coil selection of the appropriate anti-tripping relay current and voltage level specifications, according to its action current is less than half of the tripping current selection of 30% --- 50%