Danfoss 131B4978 VLT HVAC Drive FC 102, a 30 kW three phase AC variable speed drive designed for HVAC motor control, fans, pumps, compressors and refrigeration systems.
£2,982.40
The Danfoss 131B4978 is a powerful and energy-efficient AC variable speed drive (VSD) designed for precise motor control in heating, ventilation and air conditioning applications. As part of the trusted Danfoss VLT® HVAC Drive FC 102 series, it is developed for HVAC systems requiring dependable speed regulation, efficient operation and straightforward integration into commercial and industrial building services.
This drive provides intelligent motor control for fans, pumps, compressors, refrigeration equipment and air handling systems. The FC 102 platform helps optimise system performance by matching motor speed to actual operating demand, reducing unnecessary energy consumption and improving long-term equipment reliability.
With a rated output power of 30 kW / 40 HP and a three-phase 380–480 V AC supply, the Danfoss 131B4978 is well suited to larger HVAC motor control applications. Its IP21 / Type 1 enclosure, integrated RFI Class A2 (C3) filter and graphical local control panel make it a practical choice for protected indoor plant room and panel installations.
Variable speed drives such as the Danfoss VLT® HVAC Drive FC 102 regulate motor speed by adjusting output frequency and voltage. This allows HVAC systems to operate according to actual demand, helping reduce energy use, lower operating costs and minimise wear on motors and mechanical components.
The FC 102 series is designed for HVAC engineers, facilities teams and building services contractors who require reliable speed control for pumps, fans and compressors. Its HVAC-focused functionality, integrated EMC filtering and user-friendly control interface make it suitable for both new installations and replacement drive projects.
| Power | 30 kW |
|---|---|
| Voltage | 480 V |
| Phase | Three Phase |
| IP Rating | IP21 |
| Series | VLT® HVAC Drive FC 102 |
| Model code | FC-102P30KT4E21H2XGXXXXSXXXXAXBXCXXXXDX |
| Product type | AC variable speed drive / frequency converter |
| Rated output power | 30 kW / 40 HP |
| Continuous current | 61 A |
| Input voltage | 380–480 V AC |
| Input phases | 3-phase |
| Frequency | 50 / 60 Hz |
| Protection rating | IP21 / Type 1 |
| RFI filter | Class A2 (C3) |
| Brake chopper | No brake chopper |
| Control panel | Graphical Local Control Panel |
| PCB coating | Not coated PCB |
| Mains option | No mains option |
| Frame size | B2 |
| Dimensions (H × W × D) | approx. 664 × 243 × 261 mm |
| Weight | approx. 28.79 kg |
| EMC Filter | Industrial |
This drive is used to control the speed of AC motors in HVAC systems, including fans, pumps, compressors, refrigeration equipment and ventilation systems.
The drive supports motors with a rated output power of approximately 30 kW / 40 HP.
The Danfoss 131B4978 operates from a three-phase 380–480 V AC supply.
This model has an IP21 / Type 1 enclosure rating, making it suitable for protected indoor HVAC and panel installations.
No, this model is supplied with no brake chopper.
Danfoss VLT® HVAC Drives are widely used by building services engineers, facilities teams and HVAC specialists to deliver efficient motor control, reliable operation and reduced energy consumption across commercial and industrial systems.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...