The 160 A holds flat across 40 °C to 50 °C; above that it derates to 153.6 A at 55 °C and 144 A at 70 °C, so if your panel ambient runs hot, that's the number to size against, not the nameplate. Breaking capacity hits 187 kA at 240 V and 121 kA at 415 V, tapering to 17 kA at 690 V — enough headroom for most industrial service-entrance or distribution boards where fault current is high at the lower voltage taps.
The depth is shallow enough to clear a 120 mm-deep enclosure gland plate; no need to respace the backplane for this one.