What this MCCB does — and the ratings that decide the fit
The Siemens SENTRON 3VA1116-5EE32-0CA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection at a continuous current Iu of 160 A, with an insulation voltage Ui of 800 V. The TM220 thermal-magnetic release handles overload and short-circuit protection; the 160 A rating holds flat from 40 °C through 50 °C, then 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 — so in a warm panel you lose about 10 % of the continuous rating by the time the internal ambient hits 70 °C. The interrupting capacity at 240 V is 187 kA, at 415 V it is 121 kA, at 440 V it is 75.6 kA, and at 690 V it drops to 17 kA. That 187 kA at 240 V is the headline number: it means this breaker can safely clear a fault of that magnitude at the lower voltage, which is the kind of SCCR you need on a 240 V distribution board fed by a large transformer or a generator.
Built-in undervoltage release — no separate module to source
This MCCB ships with an undervoltage release (UVR) integrated as the auxiliary release design — order code 3VA9608-0BB24 for the integrated auxiliary trip. That means you do not need to buy a separate UVR module and snap it on; the release is part of the breaker. There is no auxiliary contact, no communication function, no phase-failure detection, and no ground-fault monitoring on this variant — it is a straight line-protection breaker with UVR. The front face carries IP40 protection; the mechanical endurance is rated at 15 000 cycles. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.