The ETU320 release offers an adjustable current range from 60 A up to 480 A, so one breaker frame covers multiple load sizes — useful for stocking a single spare that can be dialed in to match the circuit. Breaking capacity is 330 kA at 240 V AC, dropping to 242 kA at 415 V and 440 V, then 187 kA at 500 V, and 3 kA at 690 V.
It mounts directly onto a DIN rail or can be screw-fixed to a backplate. The IP40 front protection means it's fine inside a closed panel; no special sealing needed for the operator face.