What the 70 kA breaking capacity means for your panel
The 3VA1196-6EF42-0AA0-ZD00 is a Siemens 3VA1 IEC frame 160 molded-case circuit breaker with a class H interrupting rating of Icu=70 kA at 415 VAC.
Overload and short-circuit protection settings
The TM240 ATAM trip unit provides thermal-magnetic protection with an adjustable overload current Ir from 11 A to 16 A (In=16 A fixed), and a short-circuit pickup Ii adjustable from 10 to 20 times In. That 10-20x In range gives selectivity headroom for motor-starting inrush or transformer magnetizing currents — set the magnetic pickup high enough to ride through the transient, low enough to catch a bolted fault. The ATAM designation means it includes an alarm switch for the trip event, useful for remote fault annunciation in an unmanned panel.