The Siemens 3RT1023-1AV60 is a SIRIUS power contactor in size S0, with three normally open main contacts and screw-type terminals. It is rated for 60 Hz operation, with a rated insulation voltage of 480 V at 60 Hz and a motor rating of 5.5 kW at 690 V. The contactor mounts via screw or snap-on onto a 35 mm DIN rail per DIN EN 50022, and its 45 mm width means it fits a standard 45 mm slot in a panel — no extra space needed for side-by-side mounting, which is supported. The front face carries an IP20 rating, while the terminals are IP00, so keep the panel door closed when live.
Ratings and what they mean for your BOM
The AC-3 motor-switching rating is not directly listed, but the AC-2 rating at 400 V is 4 kW, and the AC-4 rating at 400 V is 8.5 A — these tell you the contactor is sized for moderate motor loads, likely up to around 5.5 kW at 690 V. The mechanical life is 10 million cycles, which is typical for a S0 frame and means it will outlast many applications before the contacts need attention. The operating temperature range of -25 to +60 °C covers most indoor panel environments, and the maximum altitude of 2000 m means no derating needed for most sites. Pollution degree 3 means it's rated for conductive pollution typical in industrial panels — no extra conformal coating required for normal use.
Panel integration notes
Mounts on 35 mm DIN rail per DIN EN 50022. 45 mm width, 85 mm height; side-by-side mounting allowed. Screw terminals accept solid 0.5–4 mm², stranded up to 10 mm². Depth 91 mm; side clearance 6 mm.