Motor-Duty Contactor, Size S00
The Siemens 3RT2017-1AK61 is a SIRIUS power contactor in Size S00, rated 10 A at 24 V in AC-3 duty — that is the current it can switch motor loads up to, not just carry continuously. It mounts on a 35 mm DIN rail per DIN EN 60715, using either screw fixing or snap-on, and the mounting position allows +/-180° rotation on a vertical surface plus +/-22.5° tilt forward/backward. The coil termination uses screw-type terminals, and the main circuit accepts solid or stranded wire from 0.5 to 4 mm², including dual conductors up to 2x 4 mm².
Panel Fit and Operating Envelope
Physical footprint is 45 mm wide, 58 mm high, and 73 mm deep — the depth is the dimension from the DIN rail face to the farthest projection, which matters for enclosure depth clearance. Clearance to adjacent components: 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm at the side — these are minimum air gaps for heat dissipation and arc containment. Operates in ambient temperatures from -25 to +60 °C, with storage range from -55 to +80 °C — suitable for unheated enclosures in temperate climates.
Switching Performance and Mechanical Life
Maximum operating frequency in AC-3 duty is 750 cycles per hour; in AC-4 duty it drops to 250 cycles per hour due to higher electrical stress on the contacts during inching or plugging. Arcing time is 10 to 15 ms at AC, and the contactor includes an auxiliary switch — useful for feedback to a PLC or for electrical interlocking. Typical mechanical service life is 30 million operations — that is the MTBF figure for the coil and armature assembly under rated conditions, not the electrical life under load.