SIRIUS S3 Contactor — Panel Integration
The Siemens 3RT2545-1AK60 is a SIRIUS S3 contactor with screw-type magnet coil terminals, sized for 70 mm width on a 35 mm DIN rail per DIN EN 60715. Wire termination accepts solid conductors 2x (0.5…1.5 mm²) and 2x (0.75…2.5 mm²); stranded connections go up to 1x 70 mm². The screw terminals are rated for the full AC-1 switching frequency of 900 operations per hour.
Environmental & Mounting Clearances
Minimum clearances: 10 mm upwards, 10 mm downwards, 10 mm to the side, 0 mm forwards, 0 mm backwards — important when packing multiple contactors in a row on the same DIN rail.
