The Siemens SENTRON 3VA2110-5HK46-0AA0 is a 4-pole molded case circuit breaker rated for 100 A continuous current with no derating across the full ambient range from 40 °C to 70 °C — that means the full 100 A is available even in a hot panel, a real advantage when the enclosure sits next to a furnace line or in a crowded switchroom. Its interrupting capacity reaches 187 kA at 240 V, dropping to 121 kA at 415 V and 440 V, then 76 kA at 500 V, and 17 kA at 690 V. These are the numbers that govern selectivity coordination with upstream and downstream devices — if your fault-current study shows 150 kA available at the panelboard on a 480 V system, this breaker holds the line without cascading. The electronic trip unit is an ETU340, which provides adjustable long-time, short-time, and instantaneous protection along with adjustable N-conductor protection (OFF, 50%, 100%).
The IP40 front protection means it is suited for installation inside a panel with a door; not for washdown environments. Mechanical endurance is rated at 20,000 operations, sufficient for distribution applications where the breaker is operated infrequently.