The Siemens 3VA2116-4JQ32-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 160 A continuous current across a 3-pole configuration.
At 240 V this breaker interrupts 121 kA; at 415 V and 440 V it holds 75.6 kA; at 500 V it's 52.5 kA; at 690 V it drops to 3.7 kA. That 121 kA figure at 240 V puts it in the high-interrupting category for a 160 A frame — it can sit upstream of lower-rated branch breakers without cascading failure, as long as the available fault current at its terminals stays under those numbers.
Thermal performance — flat-rated across the panel ambient range
The 160 A rating holds steady from 40 °C all the way to 70 °C ambient — no derating curve to chase in a warm enclosure. Operating range is -25 °C to 70 °C, storage from -40 °C to 80 °C. Maximum power loss is 25.5 W, which matters for heat load calculations in a sealed cabinet.
Dimensions are 105 mm wide, 181 mm tall, 86 mm deep — a standard MCCB footprint for a 160 A frame. The 3-pole design with communication module occupies the same slot as a non-communicating 3VA2 of the same frame size, so a panel layout that accommodates the 105 mm width will accept this unit.