The Siemens SENTRON 3VA2216-7KP42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 160 A continuous current across the full ambient range from 40 °C to 70 °C, with no derating needed up to that ceiling. That flat thermal curve means the breaker holds its 160 A rating in a warm panel — a real advantage when the enclosure sits near a motor or in a non-conditioned electrical room. The interrupting capacity is the headline: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 4.5 kA at 690 V. The breaker includes a communication function, which lets a BMS or SCADA read trip status, load current, and breaker position without hardwiring aux contacts.
The 140 mm width occupies 8 TE (8 x 17.5 mm) on a DIN rail — plan the rail layout accordingly. The ETU850 draws its power from the internal current transformers, so no auxiliary supply needed for the trip unit. The communication module (ordered separately) plugs into the front slot and adds a second address on the fieldbus. If you're replacing a 3VA2116-5JP32-0AE0 in an existing panel, check the lug positions: the 7KP42 variant uses a different lug arrangement — the bus-bar drill pattern may not align without re-drilling the copper.