The Siemens 3RT7027-1AH25 is a Size S0 contactor with three normally-open main poles, rated for AC-3 switching up to 690 V. Front and terminal faces carry IP20 finger protection, so it's safe to handle inside an enclosed panel.
The AC-3 switching frequency is rated at 800 operations per hour, while AC-4 (plugging/reversing) drops to 250 operations per hour; if your application cycles a motor in reverse frequently, stay under the AC-4 limit to avoid overheating the arc chamber. The coil draws 0.24 W holding power at DC — a low continuous draw that keeps the control transformer or DC supply lightly loaded. The closing power peaks at 0.72 W, so the inrush is modest. The magnet coil is rated for 48 V at 50/60 Hz, so verify your control voltage matches that nominal before wiring.