What it is and what it does
The Siemens 3RT2016-1BB41-ZW97 is a SIRIUS power contactor in size S00, designed for switching motor loads and resistive loads in control panels. It carries a 24 V DC coil and is rated for 10 A at 24 V, with a 1 hp rating at 230 V. The auxiliary switch is included, giving you a spare N/O or N/C for feedback or interlocking.
Mounting and integration
Mounts on a 35 mm DIN rail per DIN EN 60715, using either the snap-on feature or screws. The S00 footprint is compact: 45 mm wide, 58 mm tall, 73 mm deep. Clearance requirements are modest — 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm at the side — so it fits tightly in a crowded panel without needing a bigger enclosure. Mounting position is flexible: ±180° rotation on a vertical surface, and can be tilted forward/backward by ±22.5° on a vertical surface. This helps when you're retrofitting into an existing panel with odd orientations. Wiring accepts solid or stranded conductors from 0.5 to 4 mm², and can take two conductors per terminal (2x 0.5…1.5 mm², 2x 0.75…2.5 mm², or 2x 4 mm²). Coil terminals are screw-type, so no special tools needed.
Switching performance and ratings
Switching frequency depends on duty: up to 1,000 operations per hour at AC-1 (resistive), 750/h at AC-2 and AC-3 (motor starting/running), and 250/h at AC-4 (plugging/inching). The AC-3e rating also sits at 750/h. For DC switching, the arcing time runs 10–15 ms, and the operate/release time at DC is 7–13 ms. Current ratings at other voltages: 2 A at 48 V, 2 A at 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. The 1 hp at 230 V gives a quick motor-sizing reference. Mechanical life is typical 30 million operations. Coil operates at 0.8 x rated value (pickup) and holds at 1.1 x rated value (full-scale). Temperature range: -25 to +60 °C during operation, -55 to +80 °C during storage.