The coil pulls 4.4 VA at 50 Hz and draws 0.27 A at 60 Hz, so a standard 110 V control transformer with modest VA rating handles it fine.
The contactor carries a 10 A rating at 24 V DC, which is the figure you look at for DC switching in control circuits or small battery-backed loads. The arcing time sits at 10 to 15 ms, so for sensitive loads you want to confirm the switching transient won't upset downstream electronics. Main circuit impulse withstand is 6 kV, same as the auxiliary circuit, giving it coordination with standard industrial overvoltage categories.
Wiring and Mounting Reality
Spring-loaded terminals on the main circuit accept 2x (0.25 to 2.5 mm²) solid or stranded wire — no ferrules required, but they help keep strands neat. The auxiliary contacts are also rated at 12 A per NC or NO, so you can run a small pilot load or PLC input directly off them.