The Siemens SENTRON 3VA2116-5JQ32-0AC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, with a full-scale current of 160 A that holds flat across the entire 40 °C to 70 °C operating range — no derating needed as the panel warms up. Interrupting capacity hits 187 kA at 240 V, drops to 121 kA at 415 V and 440 V, then 75.6 kA at 500 V, and 3.7 kA at 690 V — the steep roll-off above 500 V means you need to check the available fault current at the installation point if you're running a 690 V distribution. Communication function is onboard, meaning this breaker can talk to a higher-level controller or energy management system — useful for selective coordination and load shedding in a SENTRON power distribution setup.
Footprint is 105 mm wide, 181 mm tall, 86 mm deep — the 105 mm width is the standard SENTRON 3VA2 three-pole mounting pitch, so it drops into an existing 3VA2 busbar or panel cutout without adapters. The supplied basic switch order code is 3VA21165JQ320AA0 — that's the bare switching mechanism; the -0AC0 suffix adds the auxiliary switches and ground-fault monitoring as a factory-assembled variant.