The Siemens SIRIUS 3RT2017-2GG22-ZX95 is a size S00 power contactor with a 24 VDC coil and spring-type terminals on both the main and auxiliary circuits. It's built for screw and snap-on mounting onto 35 mm DIN rail per DIN EN 60715, so it drops into a standard panel rail without extra bracketing. The 45 mm width and 73 mm depth leave room for adjacent devices in a crowded enclosure.
Duty cycles and switching frequency
This contactor is rated for different switching frequencies depending on the duty class: 1,000 operations per hour at AC-1 (resistive loads), 750 per hour at AC-2 and AC-3 (motor starting and running), and 250 per hour at AC-4 (plugging and inching). The AC-3e rating also lands at 750 ops/hour. That means for a conveyor motor running standard start/stop cycles, you've got headroom for frequent operation; but if you're doing reversing or jogging, you need to respect the 250/hour ceiling to avoid overheating the contacts.
Mounting and environment
Mounting position is flexible: +/-180° rotation on a vertical surface, plus tilt forward/backward by +/-22.5°. That's useful when you're fitting it into a panel with odd angles or limited swing clearance. The operating temperature range is -25 to +60 °C, and storage goes from -55 to +80 °C — so it'll sit in an unheated warehouse or a hot machine cabinet without issue. Clearances are tight: 10 mm upwards, forwards, and downwards, and just 6 mm at the sides.
Termination and wiring
Spring-type terminals on the magnet coil and main contacts accept solid or stranded wire from 0.5 to 4 mm², and you can double up two conductors of the same range per terminal. That's handy for daisy-chaining control power without an extra terminal block. The auxiliary switch is included, with contact ratings that vary by voltage: 10 A at 24 V, 2 A at 48 V or 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, 3 A at 400 V, and 0.2 A at 440 V. Also carries a 2 hp rating at 230 V for smaller motor loads on the aux.