What the ratings mean for your panel
The Siemens SENTRON 3VA1116-5EE32-0HA0 is a 3-pole molded case circuit breaker rated for 160 A continuous current (Iu) with a TM220 thermal-magnetic release. The 187 kA interrupting rating at 240 V AC means it can safely clear a fault up to that level without upstream devices needing to intervene — critical for high-fault-capacity service entrances or industrial feeders where the available short-circuit current is substantial. At 415 V the rating drops to 121 kA, and at 690 V it holds at 17 kA; these numbers define the SCCR headroom for the branch or feeder it protects. The thermal derating curve is flat from 40 °C to 50 °C at 160 A, then steps down 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. If your panel ambient runs above 50 °C, size the load accordingly — the breaker doesn't trip early, but the continuous current limit drops. The 800 V rated insulation voltage (Ui) gives headroom for 480 V and 600 V class systems without derating the insulation path.
Mounting and integration notes
The breaker measures 130 mm high, 76.2 mm wide, and 70 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures without re-drilling. The front face carries IP40 protection, meaning tools or fingers won't reach live parts, but the enclosure itself must handle the rest of the IP rating. No auxiliary contacts are integrated (order separately if needed), and the shunt trip (STL) release is built in for remote tripping via a control signal. The TM220 overcurrent release is thermal-magnetic — fixed thermal pickup for overload, magnetic for short-circuit. No undervoltage release, no ground-fault monitoring, no communication module on this variant. If you need those, the SENTRON platform offers other order codes with those options; this one is a straightforward line-protection breaker with a shunt trip.