The coil shows it needs DC (12V); the contacts (1>12/14, 21>22/24, 31>32/34) are supposed to be used with AC. ...If you feel adventurous and use the contacts with DC, the voltage and current must be derated accordingly. Read up on datasheets for - e.g. - single or double pole switches rated for AC and DC to get an idea, the voltages and currents are lower for DC usage.