VLT6005HT4B20STR3D0F00A00C0 by Danfoss

The VLT6005HT4B20STR3D0F00A00C0 variable-frequency drive is manufactured by Danfoss and belongs to the VLT 6000 HVAC Drives series. It is used in building automation to regulate the speed of centrifugal fans and pump motors that move air and chilled or heated water through large systems. This operating method is common in air handlers, ventilation units, and water circulation equipment where demand changes throughout the day. By adjusting motor frequency instead of relying on mechanical throttling, the drive helps maintain airflow or pressure targets while reducing wasted energy during partial-load operation.

This model connects to three-phase supplies rated at 380-460 VAC. It delivers up to 3.0 kW of motor output, which corresponds to 4.0 HP. Its slim Bookstyle IP 20 housing supports dense panel mounting where cabinet space is limited, and it is supplied without an LCP, so parameter access requires a remote keypad or serial programming tools. The enclosure format also helps keep front access practical when several drives are mounted close together in the same cabinet. Conducted emissions are limited by an integrated Class A1 and B filter, allowing use on industrial mains without separate suppression hardware in many installations.

Functionally, the drive is tuned for HVAC duty cycles that often involve long periods at partial load. It is supplied as a standard unit, and there is no coating on the circuit boards, so the enclosure should be kept free of corrosive vapors and contaminants. Because the boards do not have a protective coating, the unit is better suited to clean indoor panels than to spaces with chemical vapors or conductive dust. The product has no fieldbus options, so control commands are handled through hardwired terminals or an external interface rather than through a network card.