What it is and where it fits
The Siemens SIRIUS 3RT1016-1AF05-ZX95 is a size S00 power contactor rated for 10 A at 24 V DC, with screw-type terminals and snap-on mounting onto 35 mm DIN rail per EN 50022. It carries three instantaneous main contacts and is designed for switching motor loads in control panels — the S00 frame keeps the footprint to 45 mm wide by 57.5 mm tall by 114 mm deep, which fits standard panel layouts without crowding adjacent devices.
What the ratings mean for your BOM
The 10 A rating at 24 V DC is the continuous current the main contacts carry in DC control circuits — sized for switching solenoids, small DC motors, or resistive loads in a 24 VDC panel. For AC motor duty, the contactor is rated 4.5 kW at 500 V (AC-3) and 5.5 kW at 690 V, meaning it handles standard three-phase induction motors up to those power levels. The AC-4 rating of 8.5 A at 400 V covers inching or plugging applications where the contacts make and break under load more frequently. Mechanical life is rated at 30 million operations, so it holds up in high-cycle lines like conveyors or packaging machines.
Panel integration details
Mounts via screw or snap-on onto 35 mm DIN rail per EN 50022. Side-by-side mounting is permitted with 6 mm clearance at the side. The front and terminal covers carry IP20 protection — suitable for enclosed panels, not for washdown or outdoor exposure. Operating temperature range is -25 °C to +60 °C, with pollution degree 3 (conductive pollution typical in industrial enclosures). Wire sizes for main contacts accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²) solid/stranded, plus AWG equivalents 2x (20–16), 2x (18–14), and 1x 12. For type 2 coordination, use a gL/gG fuse rated 20 A; for type 1 coordination, 35 A.