Danfoss 137X4455 VLT HVAC Drive FC-102, a 4.0 kW three-phase AC variable frequency drive designed for HVAC systems, pumps, fans and building automation applications.
£1,636.00
The Danfoss 137X4455 is a high-performance AC variable frequency drive (VFD) engineered to deliver reliable motor control for HVAC systems and industrial applications. As part of the renowned Danfoss VLT® HVAC Drive series, it is designed to optimise energy efficiency, improve process control and reduce operational costs across demanding environments.
Developed specifically for heating, ventilation and air conditioning applications, this drive provides advanced motor control functionality while supporting modern building automation systems. Integrated monitoring and communication capabilities simplify installation and commissioning, helping engineers achieve dependable long-term performance.
With a rated output power of 4.0 kW and a three-phase 380–480 V AC supply, the Danfoss 137X4455 is ideal for fans, pumps, air handling units and other HVAC equipment requiring precise speed regulation. Its robust enclosure design supports installation in demanding industrial and commercial environments.
Variable frequency drives such as the Danfoss 137X4455 regulate motor speed by adjusting output frequency and voltage to match system demand. This improves process efficiency, reduces mechanical wear and lowers energy consumption compared with fixed-speed operation.
The VLT® HVAC Drive range is widely used in commercial buildings and industrial facilities where reliable operation, energy savings and intelligent system integration are essential. Advanced monitoring and communication functions support predictive maintenance and efficient facility management.
| Power | 4 kW |
|---|---|
| Current | 9.2 A |
| Phase | Three Phase |
| IP Rating | IP20 |
| Series | VLT® HVAC Drive FC-102 |
| Product type | AC variable frequency drive |
| Rated output power | 4.0 kW |
| Horsepower rating | 5 HP |
| Input voltage | 380–480 V AC |
| Input phases | Three-phase |
| Protection rating | IP55 / Type 12 |
| RFI filter | Class A1/B (C1) |
| Frame size | A4 |
| Dimensions (H × W × D) | approx. 391 × 200 × 177 mm |
| Net weight | approx. 8.89 kg |
| EMC Filter | Commercial |
The Danfoss 137X4455 is used to control the speed and performance of three-phase AC motors in HVAC and building automation applications.
The drive is designed for motors with a rated output power of approximately 4.0 kW (5 HP).
The drive operates from a three-phase 380–480 V AC power supply.
Yes, the drive includes integrated Safe Stop functionality to support safe operation and maintenance procedures.
This model includes support for PROFIBUS DP communication, allowing integration with industrial automation and building management systems.
Danfoss VLT® HVAC drives are trusted worldwide for delivering reliable motor control, energy-efficient operation and seamless integration into commercial and industrial building 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...