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134X3251 Danfoss VLT HVAC Drive 11KW/15HP 380-480VAC IP20
MPN: 134X3251
Alt. SKU: FC-102P11KT4E20H1TGXXXXSXXXXANBXCXXXXDX
Special Price
£1,697.04
£1,414.20
Regular Price
£2,828.40
Why Choose the Danfoss 134X3251 VLT HVAC Drive?
The Danfoss 134X3251 is a reliable and efficient AC variable speed drive (VSD) from the Danfoss VLT® HVAC Drive FC 102 series, designed specifically for heating, ventilation, air conditioning and refrigeration applications. It provides accurate motor speed control for pumps, fans, compressors and air handling systems in commercial buildings, industrial facilities and plant room environments.
As part of the proven FC 102 HVAC drive range, this frequency converter combines dedicated HVAC functionality with dependable performance, helping reduce energy consumption, improve system stability and lower operating costs. Its integrated Safe Stop function, EtherNet/IP communication option and graphical local control panel make it suitable for modern building services and automation systems.
With a rated output power of 11 kW (15 HP) and a three-phase 380–480 V AC supply, the Danfoss 134X3251 is ideal for medium HVAC motor applications. The drive features an IP20 chassis enclosure, RFI Class A1/B filtering, Safe Stop, EtherNet/IP MCA 121 communication, graphical local control panel, not coated PCB construction and no mains option.
Key Advantages
- Dedicated HVAC variable speed drive for pumps, fans and compressors.
- 11 kW / 15 HP output rating suitable for commercial HVAC applications.
- Three-phase 380–480 V AC input for industrial and building services power systems.
- Integrated Safe Stop safety functionality.
- EtherNet/IP MCA 121 communication option for automation integration.
- IP20 chassis enclosure for cabinet or panel installation.
- Energy-efficient motor control helps reduce running costs.
Key Features
- Danfoss VLT® HVAC Drive FC 102 series.
- 11 kW (15 HP) rated output power.
- Three-phase 380–480 V AC input supply.
- IP20 / chassis enclosure for cabinet mounting.
- Integrated Safe Stop function.
- RFI Class A1/B (C1) filtering.
- EtherNet/IP MCA 121 communication option.
- No B option fitted.
- Graphical local control panel for commissioning and monitoring.
- Not coated PCB.
- No mains option.
- No C1 option and no D option fitted.
- B3 frame format.
Technical Specifications
- Manufacturer: Danfoss
- Series: VLT® HVAC Drive FC 102
- Model: 134X3251
- Alternative model code: FC-102P11KT4E20H1TGXXXXSXXXXANBXCXXXXDX
- Product type: Variable speed drive / frequency converter
- Rated output power: 11 kW
- Horsepower rating: 15 HP
- Input voltage: 380–480 V AC
- Input phases: Three-phase
- Frequency: 50 / 60 Hz
- Protection rating: IP20 / chassis
- RFI filter: Class A1/B (C1)
- Safety function: Safe Stop
- A option: EtherNet/IP MCA 121
- B option: No B option
- Local control panel: Graphical LCP
- PCB coating: Not coated PCB
- Mains option: No mains option
- Frame size: B3
- Mounting type: Cabinet / panel mounting
Efficient Motor Control for HVAC Systems
Variable speed drives such as the Danfoss VLT® HVAC Drive FC 102 regulate motor speed by adjusting output voltage and frequency. This allows HVAC equipment to operate according to real system demand, helping reduce energy usage while improving airflow, pressure and temperature control.
The 134X3251 is particularly suitable for HVAC installations requiring cabinet-mounted drive hardware, Ethernet-based communication and reliable Safe Stop functionality. Its EtherNet/IP option supports integration with compatible automation systems, while dedicated HVAC functions help optimise performance in building services applications.
Typical Applications
- HVAC fans and ventilation systems.
- Air handling units and building services equipment.
- Chilled water pumps and condenser pumps.
- Heating and cooling circulation pumps.
- Compressors and refrigeration equipment.
- Plant room motor control panels.
- Automation systems using EtherNet/IP communication.
- Energy-saving HVAC retrofit projects.
Frequently Asked Questions
What is the Danfoss 134X3251 used for?
The Danfoss 134X3251 is used to control the speed of HVAC motors, including those used on fans, pumps, compressors and air handling equipment.
What motor power is supported by this drive?
This drive is rated for approximately 11 kW (15 HP) motor control applications.
What supply voltage does the drive require?
The 134X3251 operates from a three-phase 380–480 V AC supply.
Does the Danfoss 134X3251 include EtherNet/IP communication?
Yes. This configuration includes EtherNet/IP MCA 121, allowing integration with compatible industrial automation and building management systems.
Where is this drive typically installed?
The drive has an IP20 chassis enclosure and is typically installed inside electrical cabinets, control panels or HVAC plant room drive panels.
Trusted by HVAC Engineers Worldwide
Danfoss VLT® HVAC drives are trusted by building services engineers, facilities managers and automation specialists for efficient motor control, reliable operation and seamless integration into modern HVAC systems.
| Manufacturer Part Number | 134X3251 |
|---|---|
| Barcode | 5710108093716 |
| Height | 399mm |
| Width | 165mm |
| Depth | 249mm |
| Filter | Filter Included |
| Input Phases | Three Phase |
| Degree of protection (IP) | IP20 |
| KW Rating | 11kW |
| Output Phases | Three phase |
| VSD Range | Danfoss VLT FC102 |
| Manufacturer | Danfoss |
| Alternative Product SKU | FC-102P11KT4E20H1TGXXXXSXXXXANBXCXXXXDX |
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.
