The Siemens 3RT2047-1NB30-1AA0 is a SIRIUS-brand power contactor, Size S3. Coil voltage range is 20-33 V.
AC-4 (plugging/reversing) drops to 200 cycles per hour — that's the thermal limit of the arc chamber during frequent inrush. Arcing time is 10-20 ms, and the make/break times at both AC and DC are 38-57 ms, which is typical for a contactor of this frame size and gives the PLC enough time to confirm state before the next command. Rated switching capacity at 24 V is 10 A, dropping to 2 A at 48 V and 60 V, and 1 A at 110 V. That covers most PLC input card and indicator lamp loads without a relay interposer. The inrush current peak is 6.5 A.
For BOM freeze or second-source planning, the closest functional peer within the SIRIUS family is the 3RT2036-1AC20-ZX95, which shares the same Size S3 frame and screw-terminal design. The deciding difference is coil voltage — the 3RT2036-1AC20-ZX95 uses a 24 V AC/DC coil, while this unit runs on 20-33 V DC. Verify your control voltage before substituting.
Stranded conductor range up to 70 mm² means a single contactor can terminate a 35 mm² motor feed directly, no terminal block needed for the power circuit. At AC-3 duty of 850 cycles/hour.