SIRIUS S00, 24 VDC — what you're looking at
The 24 VDC coil pulls in at 0.8 of rated voltage and holds there; the spring-type terminals accept solid or stranded wire from 0.5 to 4 mm², or two conductors of the same range in parallel.
Coil and contact ratings — the so-what
The 24 VDC coil is rated for continuous duty across -25 to +60 °C operating ambient. Pull-in time is 7 to 13 ms DC; arcing time on break runs 10 to 15 ms. Main contact ratings: at 24 VDC it switches 10 A, at 48 VDC 2 A, at 60 VDC 2 A, at 110 VDC 1 A, at 125 VDC 0.9 A, at 220 VDC 0.3 A, and at 400 VAC it handles 3 A. The AC-1 (resistive load) maximum switching rate is 1000 operations per hour; AC-3 (motor starting) and AC-3e are 750 ops/h; AC-4 (plugging/reversing) drops to 250 ops/h. That AC-4 ceiling is the one that catches people — if your application does inching or reversing under load, you're limited to one cycle every 14 seconds, not the 4 seconds the AC-3 number suggests.
Mounting and wiring — what fits where
Spring terminals — no screwdriver torque, no retightening. Strip length is standard for spring-cage: 8 to 10 mm, ferruled stranded preferred for multi-conductor pulls.