What it is and where it fits
The Siemens SIRIUS 3RT2017-2AP01 is a size S00 power contactor with a 24 VDC coil, spring-type terminals on the magnet coil, and an integrated auxiliary switch. It snaps onto a 35 mm DIN rail per DIN EN 60715, so it drops into any standard control-panel rail without extra bracketry. The S00 frame keeps the footprint compact at 45 mm wide by 70 mm tall by 73 mm deep — that is a single 45 mm DIN slot, leaving room for adjacent overload relays or terminal blocks in a dense panel layout.
Key ratings and what they mean for the buyer
The contactor is rated for 10 A at 24 V rated value, 3 A at 400 V rated value, and 2 hp at 230 V rated value. These are the switching capacities under the respective voltage conditions — the 10 A at 24 VDC is the figure that governs DC control-circuit loads, while the 400 V / 3 A rating covers small three-phase motor switching in AC-3 duty. Operating temperature spans -25 to +60 °C during operation, with storage from -55 to +80 °C. That covers most indoor industrial enclosures without derating, though sustained high ambient above 60 °C would need a thermal check against the coil hold-in curve. The coil termination uses spring-type terminals accepting solid or stranded wire from 0.5 to 4 mm² (2 x 0.5 to 4 mm² for paralleled conductors). No screw torque to verify — spring clamp speeds up panel wiring and holds under vibration.
Mounting and integration notes
Mounting position allows +/-180° rotation on a vertical surface and can be tilted forward/backward by +/-22.5° on a vertical mounting surface. That flexibility helps when the contactor sits on a swing frame or in a tight enclosure where the rail is not perfectly vertical. Clearance distances: 10 mm upwards, 10 mm downwards, 10 mm forwards, and 6 mm at the side. The 6 mm side gap is the tightest — adjacent devices need that much air space for heat dissipation and arc containment. Arcing time is 10 to 15 ms at AC, and the switching frequency ranges from 250 operations per hour at AC-4 (heavy duty) up to 1000 ops/h at AC-1 (resistive loads). If the application cycles faster than 750 ops/h in AC-3, the contactor will overheat — the AC-3e maximum is also 750 ops/h.
Lifecycle and sourcing reality
The order code 3RT2017-2AP01 is the base variant with a 24 VDC coil and spring-type terminals. Alternate MPNs such as 3RT2017-2AP01-ZW96, 3RT2017-2AH02-ZX95, and 3RT2017-1AB01-ZX95 carry the same S00 frame and basic ratings but differ in coil voltage or terminal type — verify the coil code before substituting in a panel specified for the -2AP01.