Interrupting ratings across voltages
Interrupting capacity drops as system voltage rises: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V.
Above that it derates linearly: 158 A at 55 °C, 155 A at 60 °C, 153 A at 65 °C, and 150 A at 70 °C.
That 70 mm depth (2.76 in) is the body only — allow extra for the shunt trip wiring and the auxiliary switch pigtails if you're routing through a tight gland plate. No communication function onboard; this is a standalone line-protection breaker, not a metering or networked unit.
