The Siemens SENTRON 3VA1116-3EF32-0AH0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 160 A. Its TM240 thermal-magnetic overcurrent release is fixed — no field-swap trip units here, so the rating on the nameplate is the rating you commit to the BOM. Breaking capacity hits 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 10.5 kA at 690 V, which covers most industrial distribution panels and motor control centers without needing an upstream current-limiting fuse.
What the ratings mean for fit
The 160 A rating holds flat from 40 °C up to 50 °C, then derates 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 hot — say a packed enclosure with drives below — that 144 A at 70 °C is the number to size against, not the 160 A nameplate. The 800 V rated insulation voltage (Ui) tells you the breaker is built for 690 V line-to-line systems without derating the dielectric clearance. IP40 on the front means it keeps out tools and fingers but not dust ingress; fine for a clean indoor panel, but don't mount it facing a washdown zone.
Panel integration
Dimensions: 130 mm height, 76.2 mm width, 70 mm depth. That 76.2 mm width is a standard 3-pole MCCB footprint — it lands on a DIN rail or mounts via the screw-on baseplate without eating extra horizontal space. The auxiliary contact block (2 aux switches + 1 trip alarm switch HQ) snaps onto the side; no wiring harness mods needed if your panel already expects the HQ-style alarm contact for remote trip indication.