What it is and what it does
The Siemens 3RT2017-1BA41 is a SIRIUS power contactor in frame size S00, designed for switching loads in control panels and industrial machinery. It carries a 24 VDC coil and is rated to carry 10 A at 24 V, making it a direct fit for DC control circuits common in automation lines. The contactor mounts via screw fixing or snap-on onto a standard 35 mm DIN rail per DIN EN 60715, and the mounting position allows +/-180° rotation on a vertical surface plus +/-22.5° tilt forward/backward — useful when panel space forces an unconventional orientation.
Key ratings and what they mean for your panel
The 10 A rating at 24 VDC is the headline figure for DC switching — this is the current the main contacts can make and break at that voltage. For higher DC voltages, the rating drops: 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, and 0.3 A at 220 V. That derating curve is typical for DC loads where arc extinction is harder, so if your circuit runs at 48 V, you're limited to 2 A per contactor. The coil is screw-type terminals, accepting solid or stranded wire from 0.5 to 4 mm², or two conductors in parallel (2x 0.5–1.5 mm², 2x 0.75–2.5 mm², or 2x 4 mm²). That's standard for a size S00 contactor and matches typical control wiring in a panel. Operating temperature range is -25 to +60 °C, with storage from -55 to +80 °C — adequate for most indoor industrial environments but not for extended outdoor exposure without a heated enclosure. Mechanical life is typical 30 million operations, and the contactor includes an auxiliary switch for status feedback or interlocking.
Panel integration notes
Dimensions are 45 mm wide, 58 mm high, and 73 mm deep — a compact footprint that fits a standard 45 mm-wide DIN-rail slot. Clearance requirements: 10 mm upward, 10 mm forward, 10 mm downward, and 6 mm to the side for heat dissipation and wiring access. The contactor is rated for switching frequencies up to 1000 operations per hour at AC-1 (resistive loads), 750/h at AC-2 and AC-3 (motor starting/running), and 250/h at AC-4 (plugging/inching). For DC switching, the arcing time is 10–15 ms and the DC switching time is 7–13 ms — fast enough for most interlocking and control sequences.