The Siemens 3RT2016-1QB41 is a SIRIUS coupling contactor in size S00, designed for switching resistive and motor loads in control panels. Its 24 V DC coil pulls in at 0.7 of rated voltage and drops out cleanly — the 7 to 20 ms DC operate time and 10 to 15 ms arcing time are tight enough for sequenced starter groups without overlap. Rated at 10 A at 24 V DC for the main contacts, it handles 3 A at 400 V AC and 1 hp at 230 V AC — figures that cover small pumps, fans, and conveyor drives in a standard 400 V three-phase panel. The screw-type terminals accept solid or stranded wire from 0.5 to 4 mm², and the 45 mm width leaves room on the DIN rail for the overload relay and busbar.
Mounting and clearance
Snaps onto 35 mm DIN rail per DIN EN 60715. Mounting position allows ±180° rotation on a vertical surface and ±22.5° tilt forward/backward — useful when the panel layout forces an odd angle. Clearance requirements: 10 mm upward, 10 mm forward, 10 mm downward, and 6 mm to the side. That 117 mm depth fits a standard 200 mm deep enclosure with room for wiring ducts.