The ETU350M electronic overcurrent release gives you adjustable thermal and magnetic trip curves, plus phase failure detection, so it catches a lost phase before the motor cooks. At 415 V and 440 V it still holds 242 kA, and at 690 V it drops to 52.5 kA, which still covers most motor branch circuits.
The breaker holds 160 A flat from 40 °C through 50 °C, then derates to 153.6 A at 55 °C, 150.4 A at 60 °C, 147.2 A at 65 °C, and 144 A at 70 °C. Maximum power loss is 75 W, so factor that into the enclosure thermal budget.