The Siemens SENTRON 3VA2110-6KP42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 100 A continuous current (Iu) across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. It carries the ETU850 electronic trip unit, which gives you adjustable N-conductor protection from OFF through 20 % to 160 % of the phase rating, plus communication capability for integration into a monitored distribution system.
Breaking capacity and voltage class
At 240 V the interrupting rating hits 242 kA, dropping to 187 kA at 415 V and 440 V, then 121 kA at 500 V, and 3.7 kA at 690 V. That 242 kA figure at 240 V places it in the high-interrupting tier for low-voltage distribution — useful where available fault current is high, such as near a large transformer secondary or in a main switchboard.
Physical fit and panel integration
The case measures 140 mm wide by 181 mm tall by 86 mm deep. Four-pole width at 140 mm means it occupies two standard 70 mm MCCB mounting slots in a Siemens SENTRON panelboard or similar distribution assembly. The front face carries IP40 protection — fine for a closed panel interior; not rated for washdown or outdoor exposure without an enclosure.