What it is and what the ratings mean
The Siemens SENTRON 3VA1110-3EF36-0AD0 is a 3-pole molded case circuit breaker (MCCB) designed for line protection — meaning it sits at the feeder or distribution point to protect cables and busbars from overloads and short circuits, not a specific motor or load. Rated 100 A continuous at 40 °C, it holds that full current up to 50 °C; above that it derates to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C — so in a hot panel or outdoor enclosure you lose about 9 A at the top end. The interrupting ratings climb high: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at 500 V and 690 V — that 75.6 kA at 240 V means it can safely clear a massive fault on a 240 V distribution bus without blowing apart or welding contacts. The TM240 thermal-magnetic release handles the overload curve and short-circuit trip; no undervoltage release, no ground-fault monitoring, no communication module — this is a straightforward line-protection MCCB with three auxiliary switches HQ for status feedback.
Dimensions and panel fit
It measures 70 mm deep, 76.2 mm wide, and 130 mm high — a compact 3-pole MCCB that fits standard DIN-rail or panel-mount footprints. The supplied basic switch is 3VA11103EF360AA0; the three HQ auxiliary switches snap into the accessory slot for remote status. Rated insulation voltage is 800 V, so it's comfortable on 690 V systems. Power loss maxes at 25 W — that's the heat you need to vent in a sealed enclosure.