The Siemens SENTRON 3VA2110-5HN36-0AF0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current at 40 °C, with a rated insulation voltage of 800 V. It is designed for line protection — protecting cables and distribution panels from overloads and short circuits. The breaking capacity is 187 kA at 240 V AC, 121 kA at 415/440 V, and still 75.6 kA at 500 V — numbers that put it in the high-interrupting class for industrial switchgear.
The 690 V rating drops to 3.7 kA — still enough for motor branch circuits but not for main feeders at that voltage.