The Siemens 3VA2116-6KP32-0AA0 is a SENTRON 3VA2 molded case circuit breaker (MCCB) carrying 160 A continuous current at 40 °C through all poles, with an ETU850 electronic trip unit that gives you adjustable long-time, short-time, instantaneous, and ground-fault protection curves. The interrupting ratings are the headline here: 242 kA at 240 V AC, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V — that's a serious fault-current capability for a 160 A frame, meaning it can sit upstream of a large distribution board or a high-fault industrial panel without needing a current-limiting fuse ahead of it.
What the ETU850 trip unit gives you
The ETU850 is an electronic overcurrent release with communication capability — the breaker has a communication function built in, so it can talk to a higher-level system for monitoring and remote trip indication. The neutral protection is adjustable from OFF to 20 % up to 160 % of the rated current.
The 3VA2116-6KP32-0AA0 measures 105 mm wide, 181 mm tall, and 86 mm deep — that's about 4.13 by 7.13 by 3.39 inches.