What the 031A Rating Means for Fit
The ACS550-U1-031A-2+B055+L512: The 031A current rating at 230 V class positions this drive for motor loads up to roughly 7.5 kW (10 HP) in typical variable-torque applications — think pumps, fans, or conveyors. The +B055 and +L512 option suffixes likely add braking or communication options, but the base unit's power stage is what governs the motor match. Verify the motor FLA against the drive's continuous output rating before committing the BOM line.