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135U4678 Danfoss VLT HVAC Drive 90KW/125HP 380-480VAC IP55
MPN: 135U4678
Alt. SKU: FC-102P90KT4E55H1TGXXXXSXXXXALBXCXXXXD0
Special Price
£9,716.40
£8,097.00
Regular Price
£12,955.20
Why Choose the Danfoss 135U4678 VLT HVAC Drive?
The Danfoss 135U4678 is a high-performance AC variable frequency drive (VFD) from the advanced Danfoss VLT HVAC Drive FC 102 series. Designed specifically for heating, ventilation and air conditioning applications, this drive provides precise motor speed control for large pumps, fans, compressors and ventilation equipment while helping reduce energy consumption and operating costs.
As part of the Danfoss FC 102 HVAC range, the 135U4678 includes dedicated building-services functionality for efficient control of HVAC equipment. Its graphical local control panel, integrated Safe Stop function and PROFINET communication option make it suitable for modern plant rooms, automation systems and building management installations.
With a rated output power of 90 kW (125 HP) and a three-phase 380-480 V AC supply, the Danfoss 135U4678 is ideal for demanding HVAC motor applications. The IP55 / Type 12 enclosure provides dependable protection for installation in commercial plant rooms, mechanical areas and industrial environments.
Key Advantages
- Dedicated HVAC variable frequency drive for large pumps, fans, compressors and ventilation systems.
- 90 kW (125 HP) motor power rating for high-power HVAC motor control.
- Three-phase 380-480 V AC input compatible with commercial and industrial power systems.
- IP55 / Type 12 protection rating for demanding installation environments.
- Integrated Safe Stop safety function for enhanced operational protection.
- Graphical local control panel for simple commissioning, monitoring and diagnostics.
- PROFINET MCA 120 communication option for automation and BMS integration.
- MCB-107 24 V DC backup option supports control continuity during mains interruptions.
Key Features
- Danfoss VLT HVAC Drive FC 102 series.
- 90 kW rated output power.
- 125 HP motor rating.
- 160 A continuous output current.
- Three-phase 380-480 V AC input supply.
- IP55 / Type 12 enclosure protection.
- Integrated Safe Stop functionality.
- Graphical local control panel included.
- RFI Class A1/B (C1) filter.
- PROFINET MCA 120 communication option.
- MCB-107 24 V DC backup option.
- Not coated PCB.
- No mains option.
- C2 frame size for high-power HVAC applications.
Technical Specifications
- Manufacturer: Danfoss
- Series: VLT HVAC Drive FC 102
- Model: 135U4678
- Part Number: FC-102P90KT4E55H1TGXXXXSXXXXALBXCXXXXD0
- Product type: AC variable frequency drive
- Rated output power: 90 kW
- Motor horsepower: 125 HP
- Rated output current: 160 A
- Intermittent output current: 176 A
- Input voltage: 380-480 V AC
- Input phases: 3-phase
- Output phases: 3-phase
- Frequency: 50 / 60 Hz
- Protection rating: IP55 / Type 12
- RFI filter: Class A1/B (C1)
- Safety function: Safe Stop
- Control panel: Graphical Local Control Panel
- Communication option: PROFINET MCA 120
- D option: MCB-107 24 V DC backup
- PCB coating: Not coated
- Mains option: No mains option
- Frame size: C2
- Dimensions (H × W × D): approx. 780 × 370 × 332 mm
- Weight: approx. 58.79 kg
- EAN: 5710108309336
Efficient Motor Control for Large HVAC Systems
Variable frequency drives such as the Danfoss VLT HVAC Drive FC 102 regulate motor speed by adjusting output voltage and frequency. In HVAC systems, this allows large pumps, fans and compressors to run only as fast as required, improving energy efficiency while reducing mechanical stress on motors and connected equipment.
The FC 102 range is designed for building-services engineers, facility managers and HVAC specialists who require dependable motor control with easy integration into modern plant rooms and building management systems. Built-in HVAC functionality helps simplify system design while supporting efficient operation in high-demand environments.
Typical Applications
- Large HVAC fan control systems.
- Air handling units (AHUs).
- Commercial and industrial pump systems.
- Ventilation and extraction equipment.
- Compressors and refrigeration plant.
- Cooling towers and chiller systems.
- Heating and cooling plant rooms.
- PROFINET-enabled automation and building management systems.
Frequently Asked Questions
What is the Danfoss 135U4678 used for?
The Danfoss 135U4678 is used to control the speed of three-phase AC motors in HVAC applications such as large fans, pumps, compressors, ventilation systems and air handling units.
What motor power does this drive support?
The drive is rated for approximately 90 kW (125 HP) motor applications.
What supply voltage does the drive require?
The 135U4678 operates from a three-phase 380-480 V AC supply.
What enclosure protection does this model have?
This model has an IP55 / Type 12 enclosure, making it suitable for many commercial and industrial HVAC installation environments.
Does the Danfoss 135U4678 include a communication option?
Yes. This model code includes PROFINET MCA 120, supporting integration with compatible automation and building control systems.
Trusted by HVAC Professionals Worldwide
Danfoss VLT HVAC drives are widely used by building-services engineers, facility managers and HVAC specialists to deliver efficient, reliable and precise motor control across modern heating, ventilation and air conditioning systems.
| Manufacturer Part Number | 135U4678 |
|---|---|
| Barcode | 5710108309336 |
| Height | 780mm |
| Width | 370mm |
| Depth | 332mm |
| Filter | Filter Included |
| Input Phases | Three Phase |
| Degree of protection (IP) | IP55 |
| KW Rating | 90kW |
| Output Phases | Three phase |
| VSD Range | Danfoss VLT FC102 |
| Manufacturer | Danfoss |
| Alternative Product SKU | FC-102P90KT4E55H1TGXXXXSXXXXALBXCXXXXD0 |
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.
