The Siemens 3RT1526-1AF00 is a SIRIUS S0 power contactor with a 24 VDC coil, rated for 10 A operating current at AC-12 duty.
DC switching capability across the voltage range
This contactor carries DC switching ratings at multiple voltage points: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, 6 A at 230 V, 3 A at 400 V, and 1 A at 440 V. That spread covers common DC bus voltages in industrial control panels, from 24 V control circuits up to 440 V DC drives.
Front protection is IP20; the terminal area is IP00, meaning the wiring compartment is open and must be housed inside a panel.
Screw-type terminals accept solid or stranded conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and up to 2x (0.75 to 4 mm²). The main circuit terminals are rated for 6 kV impulse withstand voltage.