That 160 A holds from 40 °C up through 50 °C without derating — at 55 °C it's still 158 A, at 70 °C it's 150 A. So if your panel ambient runs warm, this breaker doesn't force a downsized cable or a bumped frame size until you're well past 50 °C. Breaking capacity is the number that matters when you're coordinating with upstream gear. At 240 V it clears 187 kA; at 415 V it's 121 kA; at 440 V it drops to 75.6 kA; at 500 V and 690 V it holds at 17 kA. The TM220 release is a thermal-magnetic design — thermal for overload protection, magnetic for short-circuit. It's a straight line-protection breaker: feed it, protect the cable, trip on fault.
Panel fit — footprint and integration
That's a 4-inch wide body, which is standard for a 4-pole 160 A frame in the SENTRON range.