What the interrupting ratings mean for your panel
The Siemens 3VA1116-4EF32-0DA0 is a 3-pole SENTRON molded case circuit breaker rated 160 A continuous at 40 °C, with a TM240 thermal-magnetic overcurrent release. Its interrupting capacity is 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 500 V and 690 V — that 121 kA figure at 240 V means it can safely clear a bolted fault on a high-capacity 240 V secondary bus without the arc flashing over or the breaker rupturing. The 800 V rated insulation voltage tells you the internal clearances are sized for 690 V line-to-line systems, so it's comfortable on 480 V and 600 V class supplies. The 40.5 W maximum power loss is the heat it dumps into the enclosure at full load — factor that into your panel thermal budget if you're stacking several breakers in a sealed cabinet.
Integration and mounting
The breaker measures 76.2 mm wide, 130 mm tall, and 70 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures without surprises. It ships with an undervoltage release (UVR) built in, so if you're wiring a safety circuit that drops the coil on a loss of control voltage, that's already covered — no separate UVR module to add. The TM240 release is fixed thermal-magnetic; no communication function or ground-fault monitoring on this variant. If you need those, you're looking at a different order code in the 3VA family.