It carries a 110 V DC coil, so the magnet holds in with 5.4 W holding power — no AC hum, no shading coil to fail. Rated for 11 kW at 690 V in AC-3 duty, and 11 kW at 400 V in AC-2 duty, it handles the common motor sizes in a 45 mm-wide package that snaps onto a 35 mm DIN rail per EN 50022.
If you're plugging or jogging a motor, this is the number that governs contact life. The AC-2 rating of 11 kW at 400 V covers slip-ring motor starting; AC-3 (11 kW at 690 V) covers standard squirrel-cage starting. The 110 V DC coil pulls 5.4 W to close and 5.4 W to hold — no economizer circuit needed.
The S0 frame takes 45 mm of rail width. Main circuit terminals accept 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded, up to max 2x (0.75 to 4 mm²) — or AWG equivalents 2x (16 to 12) solid, 2x (14 to 10) stranded, or 1x 8.
This matters when you're designing a motor branch circuit that needs to coordinate with upstream breakers — the 35 A limit is the tighter constraint for panel design.