What It Is and Where It Fits
The Siemens 3RT2016-1BG42 is a SIRIUS power contactor in the compact Size S00 frame — the smallest footprint in the SIRIUS family, sized for control cabinets where DIN-rail real estate is tight. It snaps onto a 35 mm DIN rail per DIN EN 60715 and can be screw-mounted as well, with a ±180° rotation on vertical surfaces and ±22.5° tilt forward/backward, so it adapts to tight enclosures without rework.
Key Ratings and What They Mean for Your Circuit
Rated at 10 A at 24 V DC for the main contacts, this contactor handles DC loads like solenoid valves, DC motor brakes, or control transformers in a 24 VDC control loop. The DC switching curve drops to 2 A at 48 V and 60 V, and 0.9 A at 125 V — so if your line runs a higher DC bus, derate accordingly. On AC-3 duty (squirrel-cage motor switching) it manages up to 750 switching cycles per hour, which is typical for conveyor or pump cycling. The auxiliary switch is built in, saving a separate add-on block for status feedback to the PLC.
Panel Integration Notes
Width is 45 mm, depth 73 mm, height 58 mm — it occupies a single 45 mm DIN-rail slot. Wiring accepts solid or stranded conductors from 0.5 to 4 mm² (single wire) or two conductors per terminal (2x 0.5…1.5 mm², 2x 0.75…2.5 mm², or 2x 4 mm²). Screw-type terminals on the coil mean no special tooling for field termination. Clearance: 10 mm upward, 10 mm forward, 10 mm downward, 6 mm to the side — plan your wireway and component spacing accordingly. Operating temperature range is -25 to +60 °C, storage -55 to +80 °C, so it lives in unconditioned cabinets without issue.