The Siemens SENTRON 3VA2216-8HL42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 160 A continuous current across the full operating temperature range from -40 °C to 70 °C — no derating needed up to the 70 °C ceiling. Breaking capacity hits 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 53 kA at 690 V — numbers that put this squarely in the high-fault category for industrial switchboards and transformer secondaries where available fault current is serious. The ETU320 electronic trip unit handles the overcurrent release, with adjustable long-time delay (tr) from 0.5 to 17 seconds, and the N-conductor protection can be set to OFF, 50%, or 100% of the phase current.
The 140 mm width for a 4-pole frame is standard for this class; it'll occupy four 35 mm DIN spaces if mounted on a rail, though the SENTRON 3VA series typically bolts to a mounting plate in switchboard builds.