The Siemens SENTRON 3VA1110-4EF36-0HC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 100 A continuously at 40 °C and derating to 91 A at 70 °C — that's the full thermal curve, so if your panel runs hot near the top of the enclosure, you need to size up or account for the drop. Breaking capacity is the headline number here: 121 kA at 240 V, 75.6 kA at 415 V, and 52.5 kA at 440 V. No undervoltage release or ground-fault module on this variant — those are separate order-code options if your spec calls for them.
Sizing and thermal reality
At 55 °C it drops to 98 A, at 60 °C to 96 A, at 65 °C to 94 A, and at 70 °C to 91 A. If your panel is in a hot mezzanine or near a furnace line, use the 70 °C figure for your load calculation. Max power loss is 25 W.
Panel fit
Footprint is 76.2 mm wide by 130 mm tall by 70 mm deep — a standard 3-pole MCCB envelope that drops into most DIN-rail or panel-mount SENTRON bases without re-drilling. The 25 W dissipation is low enough that side-by-side mounting at 40 °C ambient is fine; above that, follow the derating curve.