What the 160 A rating means for your panel
The Siemens 3VA1116-3EF36-0KC0 is a SENTRON molded case circuit breaker (MCCB) rated 160 A at 40 °C, holding that current continuously through 50 °C before it begins to derate — at 70 °C it still carries 150 A. That thermal curve means the breaker is sized for a 160 A continuous load in a standard 40 °C panel; if your enclosure runs hotter, you stay within the 150–158 A band through 65 °C. Breaking capacity hits 75.6 kA at 240 V, dropping to 52.5 kA at 415 V and 32 kA at 440 V — still enough for most industrial distribution boards fed from a 1 MVA transformer. At 690 V it holds 11.9 kA, so it's usable on 690 V line-side circuits with lower fault current. Rated insulation voltage is 800 V, covering 400/480/575/690 V systems without a voltage derating on the insulation path.