Siemens SENTRON 3VA1216-4EF32-0DA0 is a 3-pole molded case circuit breaker rated for 160 A continuous current (Iu) at 40 °C, with a TM240 thermal-magnetic overcurrent release. Breaking capacity runs 121 kA at 240 V AC, 75.6 kA at 415 V, 25 kA at 440 V, and 11.9 kA at 690 V — so the 240 V rating is the headline number, but the 415 V figure is what governs in most European 400 V distribution panels. At 690 V the capacity drops to 11.9 kA, which still clears most industrial fault levels below 12 kA. An integrated undervoltage release (UVR) is fitted as standard — part number 3VA9608-0BB25 for the auxiliary trip assembly. If you need those, you are looking at a different suffix.
Current derating — the real-world number
At 55 °C it derates to 155.6 A, at 60 °C to 151.2 A, at 65 °C to 146.8 A, and at 70 °C to 142.4 A.
Dimensions: 105 mm wide, 158 mm high, 70 mm deep.