The 3RT1517-1BB40: The 45 mm width and 72 mm depth define the DIN-rail footprint — it occupies a single 45 mm module on a 35 mm rail per DIN EN 50022. The 57.5 mm height keeps it within standard enclosure clearances. The 24 VDC coil picks up at 85% of rated voltage and drops out at 110% of rated voltage — meaning it holds in reliably down to about 20.4 V and releases above 26.4 V. This gives a clean dropout margin for PLC-driven 24 V control circuits where sag during inrush is common. Main contact ratings: 10 A at 24 V DC, 6 A at 230 V AC, 3 A at 400 V AC. Auxiliary contacts (1 NC + 1 NO) each carry 12 A rated, and at 24 V DC the NC and NO contacts are rated 20 A each. The auxiliary circuit also withstands 6 kV impulse. For DC switching at higher voltages, derate significantly: 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, 0.8 A at 440 V. This informs coordination with upstream fuses or breakers — the 20 A gL/gG fuse for type 2 coordination is a starting point for short-circuit protection. Mechanical life is typical 30,000,000 operations, so it suits high-cycling applications like conveyor diverters or packaging machine indexing.
Both main and auxiliary/control circuits use screw-type terminals. Wire sizes accepted: solid or stranded 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), max 2x (0.75–4 mm²). For AWG: 2x (20–16), 2x (18–14), 1x 12 for main contacts. This covers standard panel wiring up to 4 mm² / 12 AWG without needing ring terminals.
The mounting position allows rotation ±180° and tilt ±30° front/back on a vertical surface. RoHS compliance is indicated by the substance prohibition date of 01.07.2006.