Siemens SIRIUS 3RT1517-1AU00 Power Contactor
It is rated for a 24 VAC 50/60 Hz coil and carries a rated operational current of 10 A at 24 V (cite:,). With a width of 45 mm and a depth of 72 mm, it occupies minimal rail space — a consideration when packing multiple contactors into a crowded enclosure (cite:,).
Switching Capacity and Duty Ratings
The 3RT1517-1AU00's switching capacity varies with voltage: 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 0.8 A at 440 V (cite:,). These figures define the maximum continuous current the main contacts can make and break at the respective AC voltages — critical for selecting the contactor against a specific load profile. The auxiliary contacts are rated at 12 A per NO and per NC contact, giving flexibility for control circuit interlocking (cite:,). The contactor's rated impulse withstand voltage is 6 kV for both the main and auxiliary circuits, ensuring adequate clearance for industrial environments with transient overvoltages (cite:,).
Coil and Environmental Ratings
The coil draws 4.4 VA at 50 Hz and has a power factor of 0.27 at 60 Hz — a standard AC coil draw for this contactor frame, so the control transformer sizing is straightforward (cite:,). The enclosure front and terminals are rated IP20, meaning finger-safe but not protected against moisture — suitable for dry, enclosed panel environments (cite:,).
The main circuit terminals are screw-type, accepting 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²) solid or stranded wire — a standard range that covers most panel wiring practices (cite:,). The maximum wire size for the AC-1 rated load is 2.5 mm² (cite:).