Danfoss 134L2779 VLT HVAC Drive FC 102, an 18.5 kW three-phase AC variable frequency drive with 525-690 V AC input, IP55 Type 12 backplate enclosure, graphical local control panel, coated PCB and RFI Class A1/B C1 filter for HVAC motor control applications.
The Danfoss 134L2779 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 and air conditioning applications. It provides accurate motor speed control for pumps, fans and compressors, helping HVAC systems reduce energy consumption, improve process control and minimise mechanical wear.
This drive is engineered for commercial and industrial building services where dependable HVAC motor control, EMC performance and enclosure protection are essential. The FC 102 range includes intelligent HVAC functionality, flexible configuration options and efficient motor control features for modern building automation and energy management systems.
With a rated output power of 18.5 kW and a three-phase 525-690 V AC supply, the Danfoss 134L2779 is suitable for medium HVAC motor applications operating on higher-voltage systems. Its IP55 / Type 12 backplate enclosure, graphical local control panel, coated PCB and integrated RFI filtering make it a practical choice for protected HVAC installations requiring reliable performance.
Key Advantages
Purpose-built HVAC variable frequency drive for energy-efficient motor control.
18.5 kW motor power rating suitable for pumps, fans and compressors.
Three-phase 525-690 V AC input for higher-voltage HVAC installations.
IP55 / Type 12 backplate enclosure for enhanced environmental protection.
Coated PCB supports reliable operation in demanding environments.
RFI Class A1/B (C1) filtering helps reduce electrical interference.
Graphical local control panel for straightforward commissioning and operation.
Key Features
Danfoss VLT® HVAC Drive FC 102 series.
18.5 kW rated output power.
25 HP motor rating.
Three-phase 525-690 V AC input supply.
IP55 / Type 12 backplate enclosure.
RFI Class A1/B (C1) integrated filter.
No brake chopper configuration.
Graphical Local Control Panel included.
No A option and no B option.
No C1 option and no D option.
Coated PCB for enhanced environmental resistance.
No mains option.
Latest release standard software.
Efficient Motor Control for HVAC Systems
The Danfoss VLT HVAC Drive FC 102 is designed to regulate motor speed according to actual HVAC demand. By matching pump, fan or compressor output to system requirements, the drive helps reduce wasted energy, lower running costs and extend the service life of connected equipment.
The 134L2779 is particularly suited to HVAC installations requiring higher-voltage motor control, robust enclosure protection and dependable EMC performance. Its IP55 / Type 12 backplate enclosure, graphical local control panel, coated PCB and integrated RFI filtering make it a strong choice for modern building services and industrial HVAC applications.
Typical Applications
HVAC supply and extract fans.
Air handling units and ventilation systems.
Heating and chilled water circulation pumps.
Commercial building services installations.
Industrial HVAC and process ventilation systems.
Building automation and control systems.
Higher-voltage pump and fan control systems.
Technical Specifications
Power
18.5 kW
Voltage
690 V
Phase
Three Phase
IP Rating
IP55
Series
VLT® HVAC Drive FC 102
Part Number
134L2779
Model Code
FC-102P18KT7P55H5XGCXOXSXXXXAXBXCXXXXDX
Product type
AC variable frequency drive
Rated output power
18.5 kW
Horsepower rating
25 HP
Input voltage
525-690 V AC
Input phases
Three-phase
Continuous output current
23 A
Intermittent output current
25.3 A
Protection rating
IP55 / Type 12 Backplate
RFI filter
Class A1/B (C1)
Brake chopper
No brake chopper
Control panel
Graphical Local Control Panel
PCB coating
Coated PCB
Mains option
No mains option
Frame size
B2
Dimensions (H × W × D)
approx. 664 × 243 × 261 mm
Net weight
approx. 27.59 kg
EMC Filter
Commercial
Frequently Asked Questions
What is the Danfoss 134L2779 used for?
The Danfoss 134L2779 is used to control three-phase AC motors in HVAC applications such as pumps, fans, compressors and ventilation systems.
What motor power does the 134L2779 support?
This drive is rated for 18.5 kW or approximately 25 HP motor applications.
What supply voltage does the drive require?
The 134L2779 operates from a three-phase 525-690 V AC supply.
Does the Danfoss 134L2779 include a brake chopper?
No, this model is supplied with no brake chopper configuration.
What enclosure rating does this drive have?
The drive has an IP55 / Type 12 backplate enclosure, making it suitable for HVAC installations requiring enhanced environmental protection.
Trusted by HVAC Engineers Worldwide
Danfoss VLT® HVAC Drive FC 102 units are widely used by building services engineers, facility managers and automation specialists to deliver reliable motor control, energy-efficient operation and seamless integration into modern HVAC systems.
Power
18.5 kW
Voltage
690 V
Phase
Three Phase
IP Rating
IP55
Series
VLT® HVAC Drive FC 102
Part Number
134L2779
Model Code
FC-102P18KT7P55H5XGCXOXSXXXXAXBXCXXXXDX
Product type
AC variable frequency drive
Rated output power
18.5 kW
Horsepower rating
25 HP
Input voltage
525-690 V AC
Input phases
Three-phase
Continuous output current
23 A
Intermittent output current
25.3 A
Protection rating
IP55 / Type 12 Backplate
RFI filter
Class A1/B (C1)
Brake chopper
No brake chopper
Control panel
Graphical Local Control Panel
PCB coating
Coated PCB
Mains option
No mains option
Frame size
B2
Dimensions (H × W × D)
approx. 664 × 243 × 261 mm
Net weight
approx. 27.59 kg
EMC Filter
Commercial
No documents available for this product.
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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...