What this MCCB delivers
The 3-pole design with an ETU340 electronic overcurrent release gives you adjustable long-time, short-time, instantaneous, and ground-fault protection curves, so you can coordinate downstream breakers without nuisance trips. Interrupting capacity is the headline here: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V.
That 105 mm width is the standard 3-pole MCCB footprint for the SENTRON 3VA2 frame — it drops into the same DIN-rail or screw-mount slot as other 3VA2 breakers, so a panel laid out for a 3VA2125-8KQ42-0AA0 will accept this unit without drilling new holes or moving busbars.