The Siemens SENTRON 3VA2216-5MN32-0AJ0 is a 3-pole molded case circuit breaker (MCCB) rated for motor protection, carrying a continuous current rating of 160 A (Iu) and an interrupting capacity of 187 kA at 240 V AC. The electronic trip unit is an ETU350M, which includes phase-failure detection — a key feature for protecting three-phase motor loads from single-phasing damage.
Interrupting capacity and voltage levels
The breaker's short-circuit breaking capacity varies with system voltage: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 17 kA at 690 V. At a 480 V industrial panel, that 121 kA rating covers most high-fault installations; the 690 V figure drops to 17 kA, so verify the available fault current if the breaker is applied on a 690 V line.
Thermal derating and panel integration
The 160 A rating holds flat up to 50 °C ambient; above that it derates to 153.6 A at 55 °C, 150.4 A at 60 °C, 147.2 A at 65 °C, and 144 A at 70 °C. The enclosure footprint is 105 mm wide × 181 mm high × 86 mm deep — a standard 3-pole MCCB size that fits most DIN-rail or panel-mount cutouts. Maximum power loss is 75 W, so factor that into cabinet thermal calculations.
Auxiliary contacts and environmental limits
Includes 2 auxiliary switches plus 1 trip alarm switch (HP type). Operating temperature -25 °C to 70 °C; storage -40 °C to 80 °C. Front IP40. Latching endurance 20,000 cycles.