Danfoss 134H9643 VLT HVAC Drive FC-102, a 5.5 kW three phase AC variable frequency drive designed for HVAC fan, pump, compressor and refrigeration motor control applications.
£1,263.20
The Danfoss 134H9643 is a robust and efficient AC variable frequency drive (VFD) from the Danfoss VLT® HVAC Drive FC-102 series, designed for precise motor control in heating, ventilation, air conditioning and refrigeration applications. It is ideal for building services engineers, OEMs and facilities teams requiring reliable speed control for fans, pumps and compressors.
This drive provides advanced HVAC motor regulation while helping reduce energy consumption, improve comfort control and lower operating costs. The FC-102 platform is engineered for dependable performance, straightforward commissioning and seamless integration into modern building automation and industrial HVAC systems.
With a rated output power of 5.5 kW (7.5 HP) and a three-phase 380–480 V AC supply, the 134H9643 is suitable for medium HVAC motor applications. Its IP55 / Type 12 enclosure, integrated RFI filtering, graphical local control panel and mains disconnect make it a practical choice for protected HVAC installations.
Variable frequency drives such as the Danfoss FC-102 regulate motor speed by adjusting output voltage and frequency. This allows HVAC systems to match motor performance to real demand, reducing wasted energy while improving control of airflow, pressure and temperature.
The Danfoss 134H9643 is well suited to HVAC installations where robust enclosure protection, local graphical control and dependable motor regulation are important for long-term system performance.
| Power | 5.5 kW |
|---|---|
| Voltage | 480 V |
| Phase | Three Phase |
| IP Rating | IP55 |
| Series | VLT® HVAC Drive FC-102 |
| Model code | FC-102P5K5T4E55H2XGX1OXSXXXXAXBXCXXXXDX |
| Product type | AC variable frequency drive / frequency converter |
| Rated output power | 5.5 kW |
| Horsepower rating | 7.5 HP |
| Continuous output current | 11 A |
| Intermittent output current | 12.1 A |
| Input voltage | 380–480 V AC |
| Input phases | Three phase |
| Protection rating | IP55 / Type 12 |
| Mounting type | Enclosed / wall or panel mounting |
| RFI filter | Class A2 (C3) |
| PCB coating | Not coated PCB |
| Brake chopper | Not included |
| Local control panel | Graphical LCP |
| Mains option | Mains disconnect |
| Frame size | A5 |
| Dimensions (H × W × D) | approx. 420 × 242 × 200 mm |
| EAN | 5710107747726 |
| Net weight | approx. 11.91 kg |
| Gross weight | approx. 12.526 kg |
| EMC Filter | Industrial |
The Danfoss 134H9643 is used to control the speed of AC motors in HVAC applications such as fans, pumps, ventilation systems, compressors and refrigeration equipment.
This model supports motors with a rated output power of approximately 5.5 kW / 7.5 HP.
The drive operates from a three-phase 380–480 V AC supply.
Yes, this configuration includes a graphical local control panel for monitoring, operation and parameter access.
The Danfoss 134H9643 has an IP55 / Type 12 enclosure, making it suitable for protected HVAC installations where a higher enclosure rating is required.
Danfoss VLT® HVAC drives are widely used by building services engineers, OEMs and maintenance teams to deliver reliable motor control, efficient operation and dependable HVAC system performance.
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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...