176F2124 by Danfoss

The 176F2124 power board is manufactured by Danfoss as part of the VLT PowerCards series. It serves as the main energy switching layer inside high-capacity VLT variable-frequency drives, channeling rectified DC to the inverter stage and providing gate triggers to the IGBT stack. It is used in automated pump, fan, and conveyor systems where dependable power conversion is required, especially in drives that rely on stable inverter switching during continuous industrial operation.

Designed for VLT converters rated up to 355 kW, the board accepts a DC link derived from a three-phase supply with a nominal line reference of 400 V. The printed assembly has a coated finish, so the copper traces and passive components are protected against dust and condensation in control cabinets. Both gross and net shipping masses are listed as 2.5 kg, and a packing volume of 14.358 dm³ helps with storage and shipping space planning. For warehouse tracking, the card carries the European article number 5710107586820, which allows barcode systems to verify part identity. This surface treatment also helps reduce the chance of leakage paths forming on exposed areas during long-term cabinet operation.

This power card functions as a modular subassembly within the drive, and on-board sensors can relay fault conditions to the control section for monitoring and shutdown logic. Its multilayer layout supports high pulse frequencies while the protective lacquer helps maintain surface insulation when cabinet humidity changes over daily operating cycles. The compact assembly keeps switching and sensing elements close together, which helps maintain signal integrity between the inverter section and the control electronics. That arrangement is useful in high-capacity drives that operate for long periods under changing load demand.