The coil is 24 VDC, with a holding power of 5.4 W — a steady-state draw that a 24 VDC power supply can budget for without oversizing. Main circuit terminals are screw-type; auxiliary and control circuit terminals are spring-loaded, which saves time on wiring if you're terminating stranded conductors with ferrules.
For motor duty, the contactor is rated 4 kW at AC-2, 400 V, and 8.5 A at AC-4, 400 V. AC-2 covers slip-ring motor starting; The 4.5 kW at 500 V and 5.5 kW at 690 V ratings give headroom for higher-voltage motor circuits common in 690 V industrial networks. Auxiliary contact ratings span 10 A at 24 VDC down to 0.3 A at 220 VDC — the DC switching capability drops with voltage because DC arcs are harder to extinguish. For a 24 VDC control loop, the 10 A rating is generous; at 220 VDC the 0.3 A limit means you cannot parallel heavy solenoids on one auxiliary contact. If the panel sits in a non-conditioned space that sees 60 °C ambient, the contactor is still within its rated window.
RoHS compliance is confirmed with a substance prohibition date of 01 July 2006, covering the EU RoHS directive.