The Siemens SENTRON 3VA1110-1AA32-0HC0 is a 3-pole switch disconnector in MCCB design, rated 100 A flat across the full operating range from 40 °C to 70 °C — no derating curve to chase. The front terminal accepts busbar connection, and the IP40 front face suits enclosed panel mounting where occasional front access is needed.
The 690 V AC / 500 V DC rated operating voltage covers standard 400 V three-phase distribution and many DC bus circuits. Rated insulation voltage at 800 V gives headroom for systems with transient overvoltages up to that level. This is a switch disconnector, not a circuit breaker — there is no overload or short-circuit protection built in. It's intended for isolation and switching under load where the upstream protective device handles fault clearing.
Panel integration
The 76.2 mm width matches the standard 3-pole MCCB footprint for the SENTRON 3VA1 frame 160. Depth of 70 mm and height of 130 mm fit typical DIN-rail or backplate layouts. Front terminals accept busbar connection — plan for busbar routing rather than individual lug terminations. The IP40 front face is fine for enclosed panels; keep it out of direct washdown zones. The shunt trip coil draws power only during the trip event; no continuous hold current. Verify the control voltage matches your system: 12-30 V DC or 24 V AC. The two auxiliary switches are pre-wired with CO contacts — one set for status, one for interlock logic, no extra aux block to buy.