The Siemens SIRIUS 3RT2025-2XF40-1LA2 is a size S0 contactor with a 110 V DC coil, spring-type terminals on the coil connection, and a rated operational current that varies by DC voltage: 10 A at 24 V, 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. The inrush current peak is 15 A, and the coil hold and dropout characteristics are defined by a 0.7 initial value and 1.25 full-scale value. Mechanical life is typical 10,000,000 operations.
Mounting and Clearance
Mounts via screw and snap-on onto 35 mm DIN rail per DIN EN 60715. Recommended clearances: 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm at the side. The standing position on a horizontal mounting surface is specified. Panel builders should account for the 107 mm depth, 45 mm width, and 102 mm height when laying out the enclosure.
Switching Performance and Environment
Maximum switching frequency: 1,000 operations per hour for AC-1, AC-2, AC-3, and AC-3e duty; 300 operations per hour for AC-4. Arcing time is 10 to 10 ms. Operating temperature range -40 to +70 °C, storage -55 to +80 °C. The contactor includes an auxiliary switch and accepts solid conductors 2x (1... 10 mm²) and stranded 2x (0.5... 2.5 mm²) for the main contacts.