The Siemens SENTRON 3VA2110-5HN36-0DH0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current across the full ambient temperature range from 40 °C to 70 °C — no derating needed as the temperature climbs.
This MCCB carries a 187 kA interrupting rating at 240 V, dropping to 121 kA at 415 V and 440 V, then 75.6 kA at 500 V, and 3.7 kA at 690 V. The steep drop at 690 V (3.7 kA) means this breaker is not intended for 690 V main feeders; it's a 480 V / 600 V class device.
Built-in undervoltage release and auxiliary switching
The UVR and auxiliary switch complement is built into the basic switch assembly (3VA21105HN360AA0), not field-added.
Physical fit: panel dimensions and integration
That 105 mm width (about 4.13 in) is standard for a 3-pole MCCB in this frame size — it occupies three 35 mm DIN module widths plus a bit.