It carries 3 NO power poles rated for AC-3 duty up to 6 A at 440 V, and AC-4 switching capability for inching and plugging applications.
The AC-3 rating of 6 A at 440 V governs motor switching — that's the current the contactor can make and break across a standard squirrel-cage induction motor load. The AC-4 rating covers the more severe duty of reversing and plugging, where the contactor interrupts locked-rotor current. The 690 V AC rated operational voltage on the power circuit gives headroom for 480 V or 575 V systems, but the motor current rating at those voltages will be lower than the 440 V figure — always size by the AC-3 current at your line voltage. The 110 V DC coil draws steady DC, so verify your control supply can source the inrush without droop; DC coils don't have the same holding-current drop as AC coils.
The LP2K06105FD measures 90 mm wide by 58 mm high by 57 mm deep, with IP20 finger-safe protection per VDE 0106. It's designed for DIN-rail mounting inside an enclosure. The V1 flame-retardance rating per UL 94 means the housing won't propagate a flame — important for panel layouts where multiple contactors are ganged. Operating altitude is 2000 m without derating; above that, the air density drop reduces the contactor's interrupting capacity.