The Siemens 3VA1196-5EF36-0KA0 is a SENTRON 3VA molded case circuit breaker — 3-pole, 16 A continuous rating, with a TM240 thermal-magnetic release. The interrupting ratings climb to 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V. The shunt trip (STL) release lets you drop the breaker remotely from an E-stop or PLC output, which is handy for a machine disconnect or a safety circuit that needs to kill power without pulling a handle.
Rated 16 A up to 50 °C ambient (–); above that it derates linearly to 14.4 A at 70 °C. If this breaker lands in a crowded enclosure near drives or transformers, expect to knock the load down by about 10% at 65 °C. Dimensions are 76.2 mm wide, 130 mm tall, 70 mm deep — standard 3VA frame footprint, so it drops into a panel cutout or DIN-rail adapter without surprises.