The Siemens 3VA1116-3EE42-0AA0 is a 4-pole SENTRON molded case circuit breaker rated for 160 A continuous current at 40 °C, with a TM220 thermal-magnetic trip unit. That 160 A holds steady through 50 °C; at 55 °C it derates to 158 A, and at 70 °C it still carries 150 A — so in a warm enclosure you lose only about 6% of the rating. Breaking capacity runs 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at 500 V and 690 V. That 75.6 kA at 240 V covers high-fault transformer secondaries and large motor control centers; the 52.5 kA at 415 V handles most European industrial distribution without needing a current-limiting upstream breaker. The TM220 release is a fixed thermal-magnetic design — no interchangeable rating plugs, no electronic adjustment. That makes it a straightforward line-protection breaker for fixed-load feeders where you don't need LSIG or ground-fault options.
Dimensions are 130 mm high, 101.6 mm wide, 70 mm deep — a standard 4-pole MCCB footprint for a 160 A frame. An optional motor drive (listed as available) allows remote tripping or re-closing. Max power loss is 38 W at rated load, so plan for that heat in the enclosure — it's not a sealed-breaker application.