What this MCCB brings to a panel
The Siemens 3VA2110-7HK32-0AA0 is a 3-pole SENTRON molded case circuit breaker rated for 100 A continuous current at 40 °C through 70 °C — no derating needed across that range. Its ETU340 electronic trip unit handles line protection duty, with a maximum rating of 1 500 A. At 240 V it interrupts 330 kA; at 415 V and 440 V that drops to 242 kA, and at 690 V it still clears 3.7 kA.
The 1 500 A maximum rating sets the upper bound for short-time and instantaneous pickup, not continuous load. The interrupting ratings (330 kA at 240 V, 242 kA at 415 V, 187 kA at 500 V, 3.7 kA at 690 V) tell you the available fault current this breaker can safely clear at each voltage level — critical for SCCR coordination studies. The ETU340 trip unit is an electronic overcurrent release with adjustable settings (L, S, I, G functions depending on variant), giving selectivity flexibility downstream. Power loss is 10 W maximum, negligible for panel thermal budgeting.