The Siemens 3VA1163-6MH36-0DH0 is a 3-pole IEC circuit breaker on a 160 A frame, but configured here for starter protection at 63 A — the TM120M thermal-magnetic release provides motor-start curve shaping, while the adjustable short-circuit pickup (Ii = 5...15 x In) lets you set the magnetic trip to ride through inrush without nuisance tripping. Two HQ auxiliary switches and one HQ trip alarm switch give you status feedback for PLC or indication lamps.
The UVR coil draws continuous power when the breaker is closed; factor that into your control transformer sizing. The HQ auxiliary switches are factory-fitted, so no field-assembly of switch blocks is needed — just wire the terminals per the diagram inside the terminal cover.
