This 3VA2110-7MQ36-0BE0 is a Siemens 3VA2 IEC frame 160 circuit breaker configured for motor protection with the ETU860M electronic trip unit. It's a 3-pole unit rated In=100A with LSIG protection — that's long-time, short-time, instantaneous, and ground-fault — all adjustable. The breaking capacity sits at Icu=110kA @ 415V, which is class C, so it handles serious fault currents without upstream coordination headaches.
What the ratings mean for your panel
The ETU860M gives you a full suite of adjustments: overload protection Ir from 40A to 100A, short-circuit protection Isd from 1.2 to 15x In, instantaneous Ii from 3 to 15x In, and ground-fault Ig from 0.2 to 1x In with a time delay tg of 0.05 to 0.8 seconds. That means you can dial it in for motor starting inrush without nuisance tripping, while still catching a bolted fault fast. The undervoltage release (UVR) runs on 24V DC, so it drops the breaker if control power fails — common on safety circuits or emergency-stop chains.