Integrator's spec recap
The Siemens 3VA1163-6MH36-0KH0 is a 3-pole IEC frame 160 circuit breaker rated In=63A with a breaking capacity class H of Icu=70kA at 415 V. It is configured for starter protection with a TM120M thermal-magnetic release, but note the description explicitly states it provides short-circuit protection only — no overload protection function is active. The adjustable short-circuit release range is Ii=5...15 x In, giving you 315 A to 945 A instantaneous trip. All connections are clamp-type. This variant is designed for motor starter applications where upstream or separate overload relays handle the thermal protection.