176F2141 by Danfoss

The 176F2141 is a power section board used in Danfoss variable-frequency drives in the VLT PowerCards series. As a discrete printed circuit assembly, it carries insulated-gate components, current sensors, and snubber elements that convert DC bus energy into three-phase output for induction or permanent-magnet motors. It serves as the main inverter stage, where switching devices and protective elements work together to regulate motor current under changing load conditions. Integrated current sensing supports feedback to the drive so overload conditions and switching faults can be detected quickly.

This assembly is classified by Danfoss as a Power Card, indicating that the populated board handles the main switching duties rather than low-level control. It is assigned a Power class of 400 kW, so, when combined with the corresponding cooling plate, it can manage the output demanded by medium-to-large VLT inverters. The specified Voltage class of 500 V aligns with standard 460 V mains after rectification and provides headroom for transient overvoltage events. Mechanical handling is simplified by a mass of 2.5 kg, and its envelope is limited to 14.54 dm3, allowing access through the front service slot without rearranging adjacent modules. Gate-drive connectors, DC-link stubs, and a thermal probe are already fitted, so the board interfaces directly with the matching drive hardware.

To increase service life in polluted or humid production areas, all conductive paths are supplied in a Coated finish that inhibits corrosion and creepage. This protective layer helps preserve insulation spacing on the populated surface where dust, moisture, or airborne contaminants could otherwise affect reliability. Distribution and inventory control rely on the European Article Number 5710107586677, which supports accurate stock identification and barcode use. Because the card is delivered as a single fully populated module, on-site repair does not require soldering or component matching.