It carries a rated insulation voltage of 800 V and interrupting ratings of 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V — the 240 V figure is what you use for UL panel SCCR coordination on a 480Y/277 V secondary. The TM240 release means the thermal pickup is fixed at 240 A frame rating; the magnetic trip is adjustable.
The breaker measures 76.2 mm wide, 130 mm high, and 70 mm deep — that is a standard 3-module (3 x 25.4 mm) footprint for a 160 A MCCB.
Above that, it derates: 153.6 A at 55 °C, 150.4 A at 60 °C, 147.2 A at 65 °C, and 144 A at 70 °C.