What this breaker carries and what it protects
The Siemens 3VA1163-6MH32-0HA0 is a 3VA1 IEC frame 160 circuit breaker, 3-pole, rated 63 A with a 70 kA breaking capacity at 415 V (class H). That 70 kA Icu means it can safely interrupt a fault current up to that level without welding its contacts or venting arc gas into the panel — critical for high-fault installations where upstream gear isn't oversized. The TM120M thermal-magnetic release provides starter protection, but note the description flags it as supplied without overload protection; the TM120M here is configured for short-circuit protection only, adjustable Ii = 5...15 x In. The integrated shunt trip (STL) operates on 12-30 V DC or 24 V AC, letting a safety relay or remote E-stop drop the breaker without running control power through the main bus.
Panel integration and wiring
Mounts on standard DIN rail inside an enclosure. The nut keeper kit (included per the order code suffix) retains the terminal screws during high-vibration environments — a detail that saves a re-torque pass during commissioning. The shunt trip coil draws from a separate control supply; verify the 12-30 V DC range covers your safety circuit's nominal voltage with margin for brownout. No auxiliary contacts are listed in this variant, so if you need status feedback to a PLC, order the contact block separately.