What this MCCB is and what the ratings mean
The Siemens SENTRON 3VA2116-8JQ32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 160 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling, which simplifies panel design in warm enclosures. The ETU560 electronic trip unit gives you adjustable time-current curves (tr from 0.5 to 20 s) and a short-time delay (tsd up to 0.5 s), so you can coordinate selectively downstream without sacrificing speed on hard faults. Breaking capacity hits 440 kA at 240 V and still holds 53 kA at 690 V, meaning this breaker can sit at the main or a high-fault subfeed and clear a bolted fault without the arc flash climbing upstream.
Panel fit and integration
At 105 mm wide, 181 mm tall, and 86 mm deep, this MCCB fits a standard 3-pole footprint on a DIN rail or panel-mount base. The IP40 front protection means it's fine inside a closed cabinet but not for washdown zones. Communication function is built in — the ETU560 supports data exchange for power monitoring and remote trip indication, so you can wire it into a BMS or PLC without an add-on module.