The Siemens 3RT2325-1BW40 is a SIRIUS S0 contactor with a 48 VDC coil and screw-type terminals. It includes an auxiliary switch and is designed for snap-on mounting onto 35 mm DIN rail per DIN EN 60715, with the option of screw fixing. The S0 frame size (60 mm wide, 85 mm tall, 107 mm deep) fits standard panel layouts and leaves room for auxiliary contact blocks alongside.
DC Switching Ratings
This contactor is rated for DC switching across a range of voltages: 10 A at 24 V, 2 A at 48 V, 6 A at 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, 10 A at 230 V, 3 A at 400 V, 2 A at 500 V, 0.1 A at 600 V, and 1 A at 690 V. The arcing time is 10 to 10 ms, and the DC coil dropout time is 15 to 18 ms. These ratings define the DC load-breaking capability at each voltage level — match your circuit voltage and load current to the appropriate row.
Mounting and Clearances
Mounting position allows +/-180° rotation on a vertical surface and +/-22.5° tilt forward/backward. Required clearances: 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm at the sides. The screw-type terminals accept solid conductors of 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²), and stranded conductors from 1 to 10 mm².