The Siemens SENTRON 3VA2110-5HL36-0DA0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed in a warm enclosure. It carries a maximum interrupting capacity of 187 kA at 240 VAC, dropping to 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V.
The 187 kA at 240 VAC is the peak short-circuit rating; at 415/440 V it's still 121 kA, enough for most industrial service-entrance or distribution positions. The 3.7 kA at 690 V tells you this breaker is not intended for 690 V line-side fault duty — it's a 480 V class MCCB used on 400 V or 480 V systems. The 3-pole design covers three-phase loads.
Mounts in a standard distribution panel or MCC bucket. Dimensions are 181 mm high, 105 mm wide, 86 mm deep — a 105 mm width means it occupies three 35 mm DIN-rail spaces side by side, though this is a bolt-on MCCB, not a snap-on DIN rail unit.