The Siemens SIRIUS 3RT1016-1BB41-ZW98 is a size S00 power contactor with a 24 VDC coil, rated for 10 A at 24 V and 5.5 kW at 690 V.
The AC-4 rating at 400 V is 8.5 A — that's the switching current for reversing or inching duty, which is the tougher thermal cycle than AC-3. For standard motor start/run (AC-3), the 400 V rating is 4 kW. The 10 A at 24 V rating covers low-voltage DC loads, like PLC outputs or signal lamps.
Width is 45 mm, height 57.5 mm, depth 72 mm. The screw terminals accept 2x (0.5 to 1.5 mm²) solid, 2x (0.75 to 2.5 mm²) stranded, or max 2x (0.75 to 4 mm²) — also AWG 2x (20-16), 2x (18-14), 1x 12 for the main contacts.
