SENTRON 3VA1 MCCB for Motor and Starter Protection
This MCCB delivers 187 kA at 240 V AC, 121 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 4.5 kA at 690 V. The 4.5 kA at 690 V is the tail-end capability for 690 V line-ups; if your system runs at 690 V, verify the available fault current stays under that limit.
The 160 A rating holds flat from 40 °C through 50 °C, then derates to 156 A at 55 °C, 151 A at 60 °C, 147 A at 65 °C, and 142 A at 70 °C. In a closed panel with ambient rise, that derating curve is the one that governs your actual continuous current — don't size a 160 A breaker for a 160 A continuous load unless you can keep the internal panel ambient at or below 50 °C. Max power loss is 33 W — negligible for thermal budget in a ventilated enclosure, but worth noting if the breaker is packed tightly with other heat sources.