What it is and where it fits
The Siemens 3RT2016-1DF47 is a SIRIUS power contactor in Size S00 — the smallest frame in the range, built for switching motor and resistive loads in control panels. It carries a 110 V coil and screw-type terminals, and mounts via screw or snap-on onto 35 mm DIN rail per EN 60715. Main contacts are rated 20 to 12 A, so it handles small motors up to 1 hp at 230 V and resistive loads up to 3 A at 400 V. At 24 VDC it switches 10 A, dropping to 0.9 A at 125 VDC — useful for DC control circuits in the same panel. Operating temperature range is -25 to +60 °C, storage from -55 to +80 °C, so it's fine for unheated enclosures in temperate climates. Mechanical life is 30 million operations typical, with AC-3 switching cycles up to 750 per hour.
Mounting and wiring constraints
The contactor accepts solid or stranded wire from 0.5 to 4 mm², or two conductors per terminal in combinations like 2x 0.5-1.5 mm² or 2x 4 mm². That covers most panel wiring up to 12 AWG. No auxiliary switch is built in — if you need aux contacts, they add on separately. Clearance around the contactor: 10 mm upward, forward, and downward, and 6 mm at the sides. That's tight enough for dense DIN-rail layouts but leaves room for wiring ducts. Mounting position allows +/-180° rotation on a vertical surface and +/-22.5° tilt forward/backward. Dimensions are 45 mm wide, 58 mm high, 117 mm deep — the depth is the main thing to check if your enclosure is shallow.
Coil and switching performance
Coil pickup is guaranteed at 0.8 x rated voltage (88 V for the 110 V coil), drop-out at 1.1 x rated (121 V). DC operating time is 7 to 13 ms; arcing time runs 10 to 15 ms. That's fast enough for most motor-starting and general switching duties. Switching frequency limits: 1000 cycles/h for AC-1 resistive loads, 750 for AC-2 and AC-3 motor loads, and 250 for AC-4 (plugging/reversing). If your application needs frequent jogging or reversing, stay under 250 cycles/h or oversize the contactor.
Lifecycle and sourcing
Sourcing is straightforward: quoted to order against an RFQ. No long lead-time concerns for an active catalog item.