The Siemens 3VA2116-5JQ32-0AE0 is a 3-pole SENTRON molded case circuit breaker (MCCB) rated for 160 A continuous current, holding that rating flat across the full ambient range from 40 °C to 70 °C — no derating needed up to the enclosure's internal temperature limit. Interrupting capacity varies sharply with system voltage: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V.
The 86 mm depth (3.39 in) matters when gland-plate clearance is tight; leave at least 100 mm in front of the DIN rail for the arc-chamber exhaust and wiring sweep. Max power loss is 25.5 W at rated load.
The minimum adjustable trip setting is 240 A (the long-time pickup floor), and the maximum is 1 600 A (the short-time or instantaneous ceiling), giving a wide coordination window for selective tripping with downstream devices. Communication function is onboard, so this breaker can report status and trip events over the SENTRON bus without an external module. The auxiliary switch configuration is 4 HQ switches — high-quantity auxiliary contacts for remote indication, interlocking, or PLC feedback. That's a standard residual-current method, not a zero-sequence CT; the breaker itself handles the detection, no external RCM needed.