The Siemens 3VA2140-7MQ36-0AD0 is a 3VA2 IEC frame 160 circuit breaker with a breaking capacity class C rating of Icu=110kA at 415 V, 3-pole, fitted with an ETU860M electronic trip unit for motor protection. The LSIG protection suite covers overload (Ir=16 A...40 A), short-circuit (Isd=1.2...15x In, Ii=3...15x In), and ground-fault (Ig=0.4...1x In, tg=0.05-0.8 s) — configurable to match the motor's thermal and fault characteristics. It ships with three auxiliary switches (HQ) and clamp connections.
What the 110 kA rating means for your panel
The 3VA2 frame (160 A max) paired with a 40 A rated trip unit means the breaker body itself is oversized for the continuous current, giving thermal headroom and a robust mechanical envelope for the high interrupting duty.