Danfoss 135X9814 VLT HVAC Drive FC-102, a 4.0 kW three phase AC variable frequency drive with IP55 / Type 12 protection, RFI Class A1/B filtering, Safe Stop and EtherNet/IP MCA 121 communication for HVAC fan, pump and compressor control.
£1,628.00
The Danfoss 135X9814 is a reliable and energy-efficient AC variable frequency drive (VFD) from the Danfoss VLT® HVAC Drive FC-102 series, designed specifically for heating, ventilation, air conditioning and refrigeration applications. Engineered for accurate motor speed control, it helps optimise fan, pump and compressor performance across commercial and industrial HVAC systems.
As part of the advanced Danfoss FC-102 HVAC drive range, this unit combines dedicated HVAC intelligence with robust power electronics and flexible communication options. It supports efficient system operation by matching motor speed to actual demand, helping reduce energy consumption, mechanical stress and overall operating costs.
With a rated output power of 4.0 kW / 5.0 HP and a three-phase 380–480 V AC supply, the Danfoss 135X9814 is ideal for small to medium HVAC motor applications. Its IP55 / Type 12 enclosure provides protected installation, while the EtherNet/IP MCA 121 option enables integration with compatible industrial automation networks.
Variable frequency drives such as the Danfoss VLT® HVAC Drive FC-102 regulate motor speed by adjusting output frequency and voltage. This enables HVAC equipment to operate in line with actual system demand, reducing unnecessary energy use while improving process stability and comfort control.
The Danfoss 135X9814 is well suited to building services and industrial HVAC installations where dependable fan, pump and compressor control is required. Its IP55 enclosure, graphical control panel and EtherNet/IP communication option make it a practical choice for modern automation and climate control systems.
| Power | 4 kW |
|---|---|
| Voltage | 480 V |
| Phase | Three Phase |
| IP Rating | IP55 |
| Series | VLT® HVAC Drive FC-102 |
| Full model code | FC-102P4K0T4Z55H3TGXXXXSXXXXANBXCXXXXDX |
| Product type | AC variable frequency drive |
| Rated output power | 4.0 kW / 5.0 HP |
| Input voltage | 380–480 V AC |
| Input phases | 3-phase |
| Application range | HVAC, ventilation, heating and refrigeration |
| Protection rating | IP55 / Type 12 |
| Frame size | A4 |
| RFI filter | Class A1/B (C1) |
| Safety function | Safe Stop |
| Control panel | Graphical Local Control Panel |
| PCB coating | Not coated |
| Mains option | No mains option |
| A option | EtherNet/IP MCA 121 |
| B option | No B option |
| C1 option | No C1 option |
| D option | No D option |
| Dimensions (H × W × D) | approx. 391 × 200 × 177 mm |
| Net weight | approx. 8.09 kg |
| Software | Latest release standard software |
The Danfoss 135X9814 is used to control the speed and torque of AC motors in HVAC systems, including fans, pumps, compressors and ventilation equipment.
This drive is rated for motors with an output power of approximately 4.0 kW / 5.0 HP.
The 135X9814 operates from a three-phase 380–480 V AC supply.
The drive has an IP55 / Type 12 enclosure, helping protect it in suitable industrial and building services installation environments.
Yes, this configuration includes the EtherNet/IP MCA 121 option for integration with compatible automation networks.
Danfoss VLT® HVAC Drives are widely used by building services engineers, facilities teams and automation professionals to deliver efficient motor control, reduced energy consumption and dependable HVAC performance.
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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...