What this MCCB carries — and what the ratings mean for your panel
The Siemens 3VA2216-5MN32-0AF0 is a SENTRON molded case circuit breaker (MCCB) sized for motor protection duty — 3-pole, 160 A rated continuous current (Iu), fitted with an ETU350M electronic trip unit. The 160 A holds flat across 40 °C to 50 °C; above that it derates to 153.6 A at 55 °C and 144 A at 70 °C, so if your panel ambient runs hot, that's the number to size against, not the nameplate. Breaking capacity hits 187 kA at 240 V and 121 kA at 415 V, tapering to 17 kA at 690 V — enough headroom for most industrial service-entrance or distribution boards where fault current is high at the lower voltage taps.
Footprint and panel fit
The case measures 105 mm wide, 181 mm tall, and 86 mm deep — a standard 3-pole MCCB footprint that fits SENTRON mounting plates and most DIN-rail adapters. The depth is shallow enough to clear a 120 mm-deep enclosure gland plate; no need to respace the backplane for this one.
Trip unit and auxiliary wiring
The ETU350M release handles phase-failure detection (built in) and provides an auxiliary contact configuration of 1 auxiliary switch plus 1 trip alarm switch (HQ type). No undervoltage release, no ground-fault monitoring, no communication module on this variant — it's a straight motor-protection breaker. The integrated auxiliary trip is order code 3VA9608-0BB24; the supplied basic switch is 3VA2216-5MN32-0AA0. Maximum power loss is 75 W, so factor that into your enclosure thermal budget.