What it is and what the ratings mean
The Siemens 3VA2116-8HN32-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated 160 A continuous current, 3-pole, with an ETU350 electronic trip unit, designed for line protection in distribution panels. Its interrupting capacity hits 330 kA at 415 V — that's the fault current it can safely clear without welding contacts or rupturing the case, sized for high-available-fault installations like industrial substations or large motor control centers. The ETU350 electronic trip offers adjustable overload and short-circuit protection curves, giving the panel designer flexibility to coordinate with downstream breakers without swapping trip units. Rated insulation voltage is 800 V, so it's suitable for 690 V line-to-line systems common in European and IEC-based industrial plants.
Panel fit and integration
Dimensions are 105 mm wide, 181 mm high, 86 mm deep — fits standard Siemens SENTRON 3VA panel cutouts and busbar systems; the 86 mm depth leaves clearance behind the door for wiring gutters. Front face carries IP40 protection — suitable for indoor panel installation where no water spray is present; not rated for washdown environments. Power dissipation is 19.7 W maximum at rated load — factor that into enclosure thermal calculations to avoid derating adjacent devices.