The 3VA2116-0HN46-0AA0 is a Siemens SENTRON molded case circuit breaker (MCCB) rated for 160 A continuous current, with a maximum breaking capacity of 440 kA at 415 V AC and 187 kA at 690 V AC. The N-conductor protection is configurable to OFF, 50%, or 100% of the phase current — useful for sizing the neutral on systems with harmonic content.
There is no official successor order code — the part is current, not replaced. If you need a functional cross-reference within the same SENTRON 3VA family, the closest peer is the 3VA1112-5EE32-0AA0, but that is a different frame size and rating; the 3VA2116-0HN46-0AA0 is the 160 A, 4-pole variant with the high-breaking ETU350 release. Do not assume a drop-in swap without checking the frame dimensions and terminal layout.
At 86 mm deep, this MCCB fits standard 200 mm deep switchboards with clearance for rear-connected busbars. The 140 mm width is a 4-pole frame — plan for a 4-module wide cutout in the mounting plate. Maximum power loss is 19.7 W, so ventilation in the enclosure should account for that heat at full load.