Product Description:

The FC-051PK37T4E20H is a compact AC variable-frequency drive manufactured by Danfoss. Intended for mounting inside a control cabinet, the unit converts fixed utility power into a variable output that governs the speed of small three-phase induction motors used on conveyors, fans, and light pump skids. In automated systems, it functions as an electrical actuator interface, enabling the controller to match shaft torque to process demand while reducing energy use and mechanical wear. Its compact format suits installations where cabinet space is limited and motor control requirements remain relatively modest.

It delivers a continuous mechanical output of 0.37 kW. In imperial units, that rating equals 0.50 HP, which helps align the drive with equipment catalogs that use horsepower values. The input section accepts a line supply of 380 – 480 VAC, and that range lets the inverter tolerate common voltage variation on industrial grids without derating. Because the converter is designed for three-phase distribution networks, it draws balanced current and avoids neutral loading. An enclosure classification of IP20 / Chassis means the unit is finger-safe but still requires installation in a clean, dry cabinet to protect the electronics from conductive dust and moisture. This power level is suitable for small motor duties that need adjustable speed rather than high continuous load capacity.

The model carries the internal designation Micro Drive Series 051, which places it in the smallest frame group of the platform. It belongs to the VLT Micro Drive product group, so the parameter structure, control terminals, and accessory options remain consistent with related units in the same range. Its low-power design follows Danfoss conventions for thermal behavior and harmonic control. Placement in the VLT FC 51 Micro Drives series also keeps mounting dimensions and keypad compatibility uniform across similar models.