Product pictures Product Overview: Emerson SP4402 Parameter Specification Manufacturer Emerson Order Number SP4402 Product Name High-performance AC drive / variable speed inverter Series / Family Unidrive SP (neighbouring codes include SP3402, SP3403, SP2401 and SP4401) Application & Fault Scenarios Ideal for 400V three-phase motors on extruders, hoists, large fans, pumps, test benches and heavy process lines needing stable speed and high torque. Common issues: drive trips on