Switching capability across the voltage range
The contact ratings span a wide voltage band: 10 A at 24 V, 4.7 A at 60 V, 3 A at 110 V, 1.2 A at 220 V, 6 A at 230 V, 3 A at 400 V, 0.5 A at 440 V, 2 A at 500 V, 0.26 A at 600 V, and 1 A at 690 V. These are the rated operational currents — the actual load current the contacts can make and break at the given voltage. For a 24 VDC control circuit, you get a full 10 A; at 600 V, the rating drops to 0.26 A, which still covers most pilot-duty and signal loads. The coil itself draws 4 W closing and 4 W holding at DC.
Relative humidity minimum is 10 %. The part is RoHS-compliant per the substance prohibition date of 10/01/2009.