Product Description:

The 131H8261 is a variable-frequency drive produced by Danfoss within the VLT FC 302 Automation Drives series. This three-phase unit regulates motor speed and torque in automated conveyors, compressors, and pump stations, where stable control is needed across changing load conditions. It is intended for industrial duties that require repeatable acceleration, deceleration, and steady-state speed control from a single cabinet-mounted unit. The 302 series uses modular option slots, and the C2 frame size helps reduce cabinet space in installations with limited room. Coated printed circuit boards add resistance to airborne moisture and dust that are often present on plant floors.

On a 400 V supply, the drive has an apparent power of 73.4 kVA and accepts an input range of 380–500 VAC. Under high-overload duty, it can deliver 106 A of continuous current, and its full-load efficiency of 0.98 helps limit wasted energy as heat. The enclosure is rated IP54/Type12 N3R, and standard cable entries, an RFI Class A1/B filter, and a Graphical Local Control Panel support local setup and routine operation. The unit uses a standard language pack, and the factory-installed MCB-103 resolver card is the only occupied option position because no brake chopper is fitted and the listed A, C, C0, C1, and D slots are unused.

For short torque demands, the inverter can raise motor current to 159 A while maintaining output within a peak-load limit of 55 kW. Heat generated at those load levels is dissipated at 1,022 W on the HO profile and 1,384 W on the NO cycle, which indicates the thermal load the enclosure must release during operation. A mass of 57.29 kg supports direct mounting, and the drive is sized for loads up to 75 HP on mixers, fans, or extruders. These ratings suit process equipment that sees frequent starts and changing torque demand.