What it is and where it fits
The Siemens SIRIUS 3RT2016-1FB41-ZW96 is a Size S00 power contactor with a 24 VDC coil, screw-type terminals, and a rated switching frequency of up to 1 000 cycles per hour in AC-1 duty. It is designed for switching motor loads and resistive loads in industrial control panels, and mounts on a 35 mm DIN rail per DIN EN 60715 via screw or snap-on fastening.
Key ratings and what they mean for fit
The 24 VDC coil holds at rated voltage and drops out reliably; the coil's arcing time is 10 to 15 ms, and the DC switching delay ranges from 38 to 65 ms. For motor switching in AC-3 duty, the contactor is rated for 750 cycles per hour — that's the practical limit for starting and stopping induction motors under load. The AC-4 maximum of 250 cycles per hour applies for reversing or plugging duty, where the contacts see higher electrical stress. Wire termination accepts solid or stranded conductors from 0.5 to 4 mm², with dual-wire capacity up to 2x 4 mm². The screw terminals are rated for the full contactor current range, so no derating is needed for the wire size within that range.
Mounting and environment
The contactor measures 45 mm wide, 58 mm high, and 73 mm deep — a compact Size S00 footprint that fits standard 45 mm-wide DIN-rail slots. It can be mounted on a vertical surface with +/-180° rotation and tilted forward/backward by +/-22.5°, giving flexibility in tight enclosures. Required clearances: 10 mm upward, 10 mm forward, 10 mm downward, and 6 mm at the side. Operating temperature range is -25 to +60 °C; storage range is -55 to +80 °C. That covers most indoor panel environments, including unheated warehouses in cold climates.