Sourcing is straightforward — specify the G9S-301 AC24 against your BOM line and we can quote to order. No broker or surplus channel needed for this one.
The 24 VAC coil tells you this relay is designed for panels where an AC control transformer supplies the safety circuit, not a 24 VDC power supply. Verify your control voltage before committing the line — swapping AC for DC coils is not a field-modifiable change.