SIRIUS S0 power contactor, 48 VDC coil
It is rated for 11 kW at AC-2 duty at 400 V, and carries a 15.5 A rated operational current at AC-4 at 400 V — the AC-4 figure governs reversing or inching applications where the contactor makes and breaks stalled rotor current, so that is the number to size against for plugging or jogging duty. The coil is rated 48 VDC, with a closing and holding power of 5.4 W. The DC coil holds continuously at rated voltage; verify your control transformer or power supply can deliver the inrush without droop below the dropout threshold.
This is typical for industrial environments but means the contactor should be mounted in a clean, dry enclosure if condensation is expected. The mechanical service life is typically 10,000,000 switching cycles. Electrical life depends on the load and switching frequency; the AC-1 maximum operational current is 10 A, which covers resistive loads like heaters.