Product pictures Product Overview: Emerson SP0403 Parameter Specification Manufacturer Emerson Order Number SP0403 Product Name General-purpose AC frequency inverter / variable frequency drive Series / Family Commander SK series (neighbouring frames SKA, SKC, SKD and higher) Application & Fault Scenarios Suitable for 230V three-phase motors around 1.5kW on winding, packaging, printing, conveying and machine-tool auxiliary drives. Typical faults: no display on power-up,