Danfoss 134U3875 VLT HVAC Drive FC 102, a 3.0 kW three-phase AC variable frequency drive with IP55 Type 12 backplate enclosure, Modbus TCP MCA 122, MCB-101 general purpose I/O, coated PCB, graphical local control panel and RFI Class A1/B C1 filter for HVAC motor control applications.
£1,705.00
The Danfoss 134U3875 is a compact 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 precise 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, fieldbus communication, flexible I/O 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 3.0 kW and a three-phase 380-480 V AC supply, the Danfoss 134U3875 is suitable for small to medium HVAC motor applications. Its IP55 / Type 12 backplate enclosure, Modbus TCP MCA 122 communication option, MCB-101 general purpose I/O, coated PCB and graphical local control panel make it a practical choice for protected HVAC installations requiring reliable control and network integration.
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 134U3875 is particularly suited to HVAC installations requiring robust enclosure protection, Modbus TCP communication and flexible I/O expansion. 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.
| Power | 3 kW |
|---|---|
| Voltage | 480 V |
| Phase | Three Phase |
| IP Rating | IP55 |
| Series | VLT® HVAC Drive FC 102 |
| Part Number | 134U3875 |
| Model Code | FC-102P3K0T4P55H3XGCXXXSXXXXAQBKCXXXXDX |
| Product type | AC variable frequency drive |
| Rated output power | 3.0 kW |
| Horsepower rating | 4.0 HP |
| Output current | 6.3 A |
| Input voltage | 380-480 V AC |
| Input phases | Three-phase |
| Protection rating | IP55 / Type 12 Backplate |
| RFI filter | Class A1/B (C1) |
| Brake chopper | No brake chopper |
| Communication option | Modbus TCP MCA 122 |
| I/O option | MCB-101 General Purpose I/O |
| Control panel | Graphical Local Control Panel |
| PCB coating | Coated PCB |
| Mains option | No mains option |
| Frame size | A5 |
| Dimensions (H × W × D) | approx. 420 × 242 × 200 mm |
| Weight | approx. 12.15 kg |
| EAN | 5710107999019 |
The Danfoss 134U3875 is used to control three-phase AC motors in HVAC applications such as pumps, fans, compressors and ventilation systems.
This drive is rated for 3.0 kW or approximately 4.0 HP motor applications.
The 134U3875 operates from a three-phase 380-480 V AC supply.
Yes, this model includes the Modbus TCP MCA 122 communication option for integration with automation and building control networks.
The drive has an IP55 / Type 12 backplate enclosure, making it suitable for HVAC installations requiring enhanced environmental protection.
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.
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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...