The Siemens SIRIUS 3RT2016-1UB42 is a size S00 power contactor with a 24 VDC magnet coil and screw-type terminals, designed for snap-on mounting onto 35 mm DIN rail per DIN EN 60715. At 45 mm wide, it fits compact control panels where space is at a premium — the S00 frame is the smallest in the SIRIUS contactor family, sized for light motor and resistive loads up to the rated switching currents.
Switching Ratings and Duty Cycles
Coil holds at 24 VDC nominal with an operating range of 0.8 to 1.1 times the rated value — so it picks reliably down to about 19.2 V and drops out below that. Switching currents vary by voltage: 10 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, and 3 A at 400 V. For motor starting duty (AC-3), the maximum switching frequency is 750 operations per hour; for resistive loads (AC-1) it reaches 1,000 per hour, and for severe inrush duty (AC-4) it drops to 250 per hour. DC switching times run 7 to 13 ms with an arcing time of 10 to 15 ms.
Mounting and Clearance
Mounts on 35 mm DIN rail per DIN EN 60715 via screw and snap-on fastening. The mounting position is flexible: ±180° rotation possible on a vertical surface, and it can be tilted forward or backward by ±22.5°. Required clearances: 10 mm upwards, forwards, and downwards; 6 mm at the sides. That 6 mm side clearance is tighter than many contactors — plan your DIN-rail layout accordingly if you're packing multiple units side-by-side.
Terminal Wiring
Screw-type terminals accept solid or stranded conductors from 0.5 to 4 mm². For dual-wire termination, the range is 2× (0.5 to 1.5 mm²), 2× (0.75 to 2.5 mm²), or 2× 4 mm². Strip length and torque values follow standard Siemens practice for the S00 frame — no special tooling needed.
Environmental and Lifecycle
Operating temperature range is -25 to +60 °C; storage range extends from -55 to +80 °C. The contactor includes a built-in auxiliary switch. Lifecycle status is current production — this is an active catalog part, not a phase-out or NRND item. Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time.