The interrupting capacity tells you where this breaker can be applied: 242 kA at 240 V AC, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V. This is a line-protection device (not a motor-protection or generator-protection variant), so it's sized for cable and busbar protection in a main or feeder breaker role. The 3VA2 frame is the higher-interrupting series within the SENTRON family, suited for installations where SCCR requirements are demanding.
That means you get remote status indication and remote tripping capability out of the box — no separate aux kit to order. The shunt trip allows a PLC or safety relay to open the breaker on demand, which is useful for emergency-stop circuits or interlocking schemes. If UVR or GF protection is needed, that's a different order code within the 3VA2 family. The trip indicator and voltage trigger features are present, so local visual trip indication is standard.
The 86 mm depth means it protrudes less than older SENTRON frames, which can help with shallow enclosure fit. Maximum power loss is 10 W, which is moderate for a 100 A MCCB. In a sealed enclosure with multiple breakers, that heat adds up — factor it into your thermal budget rather than assuming zero dissipation.
The 100 A rating is continuous at any temperature within the operating range, so no summer derating worry.