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131H4781 Danfoss VLT FC-102 HVAC Drive 37 KW / 50 HP, 380 - 480 VAC, IP20
MPN: 131H4781
Alt. SKU: FC-102P37KT4E20H1XGXXXXSXXXXAGBXCXXXXDX
Special Price
£3,365.28
£2,804.40
Regular Price
£5,608.80
Why Choose the Danfoss 131H4781 VLT® HVAC Drive FC 102?
The Danfoss 131H4781 is a high-performance AC variable frequency drive (VFD) engineered for advanced HVAC applications requiring precise motor speed control, energy efficiency and reliable operation. Part of the renowned Danfoss VLT® HVAC Drive FC 102 series, this drive is specifically designed to optimise the performance of pumps, fans, compressors and air handling systems in commercial and industrial environments.
The FC 102 platform combines intelligent motor control, integrated HVAC-specific functions and flexible communication capabilities. Designed to reduce energy consumption and improve system performance, it helps facility managers and engineers achieve lower operating costs while maintaining optimal environmental conditions.
With a rated output power of 37 kW (50 HP) and a three-phase 380–480 V AC supply, the Danfoss 131H4781 is ideal for medium to large HVAC installations. Its compact IP20 chassis design allows straightforward installation within electrical control panels and plant room environments.
Key Advantages
- Purpose-built HVAC variable frequency drive for ventilation, heating and cooling systems.
- 37 kW / 50 HP motor power rating for demanding applications.
- Three-phase 380–480 V AC input suitable for industrial power networks.
- Advanced energy-saving features for reduced operational costs.
- Integrated HVAC control functions and monitoring capabilities.
- LonWorks MCA 108 communication option for building automation integration.
Key Features
- Danfoss VLT® HVAC Drive FC 102 series.
- 37 kW (50 HP) rated output power.
- Three-phase 380–480 V AC input supply.
- IP20 / Chassis enclosure.
- RFI Class A1/B (C1) integrated filter.
- Graphical Local Control Panel (LCP).
- LonWorks MCA 108 communication module.
- Optimised control algorithms for HVAC applications.
- Energy monitoring and system diagnostic functions.
- Compact frame size B4 construction.
Technical Specifications
- Manufacturer: Danfoss
- Series: VLT® HVAC Drive FC 102
- Part Number: 131H4781
- Model Code: FC-102P37KT4E20H1XGXXXXSXXXXAGBXCXXXXDX
- Product Type: AC variable frequency drive
- Rated Output Power: 37 kW (50 HP)
- Input Voltage: 380–480 V AC
- Input Phases: 3-phase
- Protection Rating: IP20
- Enclosure Type: Chassis
- RFI Filter: Class A1/B (C1)
- Brake Chopper: None
- Communication Option: LonWorks MCA 108
- Frame Size: B4
- Mounting Type: Panel / cabinet mounting
Advanced HVAC Motor Control
The Danfoss FC 102 HVAC drive is specifically developed for building services applications. By accurately controlling motor speed and torque, it helps reduce energy consumption, minimise mechanical wear and improve overall system efficiency across ventilation, heating and cooling systems.
Integrated HVAC functionality simplifies commissioning while advanced communication options allow seamless integration with building management systems (BMS) and automation networks. The result is improved comfort, lower operating costs and enhanced equipment reliability.
Typical Applications
- HVAC ventilation systems.
- Air handling units (AHUs).
- Chilled water and condenser pumps.
- Cooling towers.
- Industrial and commercial fans.
- Building management and automation systems.
- Heating and refrigeration installations.
Frequently Asked Questions
What is the Danfoss 131H4781 used for?
The drive is designed for HVAC applications including fans, pumps, air handling units and other building services equipment requiring efficient motor control.
What motor size can this drive control?
The Danfoss 131H4781 is rated for motors up to 37 kW (50 HP).
What supply voltage does the drive require?
The drive operates from a three-phase 380–480 V AC supply.
Does the drive support building automation systems?
Yes, this model includes a LonWorks MCA 108 communication option for integration with building management and automation systems.
Where is the drive typically installed?
The IP20 chassis design is intended for installation inside electrical control panels or equipment cabinets.
Trusted by HVAC Engineers Worldwide
Danfoss VLT® HVAC Drives are widely used throughout commercial buildings and industrial facilities, delivering reliable motor control, reduced energy consumption and seamless integration with modern building automation systems.
| Manufacturer Part Number | 131H4781 |
|---|---|
| Barcode | 5702427551282 |
| Height | 520mm |
| Width | 230mm |
| Depth | 242mm |
| Filter | Filter Included |
| Input Phases | Three Phase |
| Degree of protection (IP) | IP20 |
| KW Rating | 37kW |
| Output Phases | Three phase |
| VSD Range | Danfoss VLT FC102 |
| Manufacturer | Danfoss |
| Alternative Product SKU | FC-102P37KT4E20H1XGXXXXSXXXXAGBXCXXXXDX |
Write Your Own Review
The VLT HVAC drive has built-in intelligence to give optimal process control to heating, ventilation and air conditioning (HVAC). It is simple to use and extremely cost-efficient, featuring a number of functions that are ideal for use with pumps, fans and compressors to save energy, meet environmental regulations and reduce costs in modern buildings.
The VLT HVAC drive has a compact, robust design and is ideally suited to locations where space is restricted. A selection of safety features, such as Safe Torque Off and Safe Maximum Speed, protect both applications and their operators.
Enclosures can be purchased separately, up to IP66, and an additional option available upon purchase is a unique coating to provide added protection for the circuit boards. Integrated DC chokes and RFI filters safeguard installations by minimizing harmonic distortion and electromagnetic.
Supply voltages and power range
3 x 200-240 V...1.1-45 kW
3 x 380-480 V...1.1 kW – 1 MW
3 x 525-600 V...1.1-90 kW
3 x 525-690 V...45 kW – 1.4 MW
Low harmonic drive
3 x 380-480 V...132-710 kW
12-pulse drive
3 x 380-480 V...250-200kW
Features and benefits
- There’s no need for external cooling or oversizing as the maximum ambient temperature is 50°C without derating
- PLC capacity is often unnecessary thanks to the Smart Logic Controller
- A low initial investment and easy upgrades are possible thanks to the modular concept with a wide range of options
- The need for external control and conversion equipment is avoided due to integrated pump, fan and compressor functionality
- 5–15% energy is saved as a result of the Automatic Energy Optimization function
- Less gateway solutions are needed thanks to a wide range of HVAC protocols for building management system controller connectivity
Applications
Pumps, fans, compressors.
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For further information on this product please get in touch with our team or visit the Danfoss website.
