What the 160 A rating means for your panel
Breaking capacity across voltages
This MCCB delivers 187 kA at 240 V, 121 kA at 415 V, 76 kA at 440 V, and 17 kA at both 500 V and 690 V. The steep drop above 440 V means the breaker is best applied in 240 V or 400 V-class systems where fault current is high; at 690 V the 17 kA rating still covers most industrial motor-control centers, but verify the available fault current at that voltage.
The 160 A rating holds from 40 °C up to 50 °C ambient; above that it derates to 158 A at 55 °C, 155 A at 60 °C, 153 A at 65 °C, and 150 A at 70 °C.