176F2126 by Danfoss

The 176F2126 is a printed-circuit power card manufactured by Danfoss for the VLT PowerCards series. This assembly fits into the power compartment of compatible variable-frequency drives, where it conditions incoming three-phase supply, monitors critical currents, and sends gate signals to the IGBT modules. By handling these power-stage tasks on one board, the drive can regulate motor torque and speed with consistent switching behavior during startup, loaded running, and deceleration. That role is important in pump, fan, and conveyor duty where load can change quickly over a cycle.

The card is intended for drives that use a DC link derived from 400 V mains, and its copper traces and bus bars support a continuous 400 kW power channel. A conformal lacquer leaves the board coated, which helps limit moisture-induced tracking and surface contamination inside humid cabinets. The assembly has a mass of 2.5 kg and occupies only 14.079 dm³ of enclosure volume, so it fits compact drive sections without adding much load to mounting hardware. The compact volume also leaves room for bus connections, heat sinks, and neighboring filter components in the same cabinet section.

Identification uses the global article code 5710107586806, which helps distinguish the correct part in inventory records and from other assemblies in the same drive family. As a Power Card, the unit places test points along the edge connector for gate-pulse measurement while the inverter remains energized. The layout also preserves the creepage and clearance distances needed in high-power drive assemblies, which supports separation between conductive paths on the board. This arrangement helps the card operate reliably beside other control and power components in the enclosure while maintaining stable switching control for the connected motor system.