What the ratings mean for fit
The Siemens SENTRON 3VA1116-5EF36-0AC0 is a 3-pole molded case circuit breaker rated for 160 A continuous current at 40 °C, with a TM240 thermal-magnetic overcurrent release. That 160 A holds flat through 50 °C — you only start seeing derating above that, down to 144 A at 70 °C. The interrupting ratings are substantial: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V. This is a line protection version, meaning it's configured for feeder or main breaker duty, not motor circuit protection. The TM240 release is a fixed thermal-magnetic trip unit — no electronic adjustments, no communication module, no ground-fault monitoring. That makes it a straightforward, reliable choice for standard distribution panels where you don't need selective coordination curves or remote monitoring. The 2 auxiliary switches (HQ type) give you status feedback for SCADA or panel indication.
Panel integration and environment
Dimensions are 130 mm high, 76.2 mm wide, and 70 mm deep. That's a standard 3-pole MCCB footprint for a 160 A frame — fits most Siemens SENTRON distribution panels and third-party enclosures with the appropriate mounting kit. Front-side IP40 protection means it's suitable for dry indoor panels; not rated for washdown or outdoor exposure. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C. The 70 mm depth is shallow enough for most 200 mm deep enclosures, leaving room for wiring and busbar connections behind the breaker.