The Siemens 3VA1196-4GE42-0AA0-ZD00 is a 3VA1 IEC frame 160 molded-case circuit breaker (MCCB) with a breaking capacity class S rated at 36 kA Icu at 415 V. It is a 4-pole unit fitted with a TM220 thermal-magnetic release, set at In=16 A with overload protection adjustable Ir=11 A…16 A and fixed short-circuit protection Ii=20 x In. The N conductor is protected at 100%.
The TM220 release gives a thermal curve for overloads and a magnetic trip at 20 times the rated current (320 A) for short-circuits, so it coordinates well downstream of a larger frame or upstream of smaller branch breakers. The adjustable Ir band (11 A to 16 A) lets you fine-tune the overload threshold to match the actual load without swapping the breaker.