What the Description Means for Fit
The LC1FK43Q22: The description 'CONT 3P 2F2O 380V-50HZ' tells you this is a three-pole contactor with two normally-open and two normally-closed auxiliary contacts, designed for a 380 VAC, 50 Hz control circuit. The 3P main poles handle three-phase power switching; the 2F2O (2 front, 2 open — industry shorthand for NO/NC) auxiliary contact block provides feedback or interlocking without an add-on module. This is a fixed-coil-voltage unit — the 380V-50Hz coil rating means it pulls in at that line voltage, so verify your control supply matches exactly; a 400V or 480V supply will overheat the coil long-term.
Deployment Context
The 3P power section is sized for motor starting or resistive load switching in a 380V-50Hz installation — common in European and Asian industrial lines. The auxiliary contacts (2 NO + 2 NC) are wired into the PLC input or safety circuit for status feedback; no separate auxiliary block is needed for basic interlocking.