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134H9403 Danfoss VLT HVAC Drive 4.0KW/5.5HP 380-480VAC IP55
MPN: 134H9403
Alt. SKU: FC-102P4K0T4Z55H3TGXXXXSXXXXAXBXCXXXXDX
Special Price
£1,002.96
£835.80
Regular Price
£1,671.60
Why Choose the Danfoss 134H9403 VLT HVAC Drive?
The Danfoss 134H9403 is a compact and efficient AC variable frequency drive (VFD) from the advanced Danfoss VLT HVAC Drive FC 102 series. Designed for heating, ventilation and air conditioning applications, it provides reliable motor speed control, improved energy performance and dependable operation in commercial and industrial building services.
This drive helps optimise HVAC system performance by matching motor output to real demand. The FC 102 platform includes dedicated HVAC functionality, user-friendly commissioning features and flexible motor control, making it suitable for pumps, fans and compressors used across modern buildings and plant rooms.
With a rated output power of 4.0 kW / 5.5 HP and a three-phase 380–480 V AC supply, the Danfoss 134H9403 is ideal for smaller HVAC motor applications requiring robust control. Its IP55 / Type 12 enclosure offers enhanced protection for installation environments where a higher enclosure rating is preferred.
Key Advantages
- Efficient variable frequency drive for HVAC applications.
- 4.0 kW / 5.5 HP power rating for fans, pumps and compressors.
- Three-phase 380–480 V AC input suitable for commercial and industrial systems.
- IP55 / Type 12 enclosure for enhanced environmental protection.
- Integrated Safe Stop safety functionality.
- Built-in RFI Class A1/B (C1) filter for EMC performance.
- Graphical Local Control Panel for simple setup and operation.
Key Features
- Danfoss VLT HVAC Drive FC 102 series.
- 4.0 kW / 5.5 HP rated output power.
- Three-phase 380–480 V AC input supply.
- IP55 / Type 12 enclosure.
- A4 frame size.
- RFI Class A1/B (C1) integrated EMC filter.
- Safe Stop function included.
- Graphical Local Control Panel.
- Standard cable entries.
- Not coated PCB.
- No mains option.
Technical Specifications
- Manufacturer: Danfoss
- Series: VLT HVAC Drive FC 102
- Model: 134H9403
- Model code: FC-102P4K0T4Z55H3TGXXXXSXXXXAXBXCXXXXDX
- Product type: AC variable frequency drive
- Rated output power: 4.0 kW / 5.5 HP
- Input voltage: 380–480 V AC
- Input phases: 3-phase
- Protection rating: IP55 / Type 12
- Frame size: A4
- RFI filter: Class A1/B (C1)
- Safety function: Safe Stop
- Control panel: Graphical Local Control Panel
- PCB coating: Not coated PCB
- Mains option: No mains option
- Mounting type: Wall / panel mounting
- Dimensions (H × W × D): approx. 391 × 200 × 177 mm
- Net weight: approx. 7.94 kg
- Gross weight: approx. 8.676 kg
- EAN: 5710107745319
Efficient Motor Control for HVAC Systems
The Danfoss VLT HVAC Drive FC 102 regulates motor speed by adjusting output voltage and frequency, allowing HVAC equipment to operate according to real system demand. This helps reduce energy consumption, improve comfort control and minimise mechanical stress on motors and driven equipment.
With HVAC-focused control features and a durable IP55 enclosure, the 134H9403 is well suited to building services and industrial applications where reliable operation, efficient commissioning and long-term performance are important.
Typical Applications
- HVAC fans and ventilation systems.
- Air handling units.
- Heating and cooling pumps.
- Compressors and refrigeration equipment.
- Building management systems.
- Plant rooms and mechanical services installations.
- Energy-efficient retrofit and replacement projects.
Frequently Asked Questions
What is the Danfoss 134H9403 used for?
The Danfoss 134H9403 is used to control AC motors in HVAC applications such as fans, pumps, compressors and ventilation systems.
What motor power does this drive support?
The drive is rated for 4.0 kW / 5.5 HP motor applications.
What supply voltage does the drive require?
The 134H9403 operates from a three-phase 380–480 V AC supply.
What enclosure rating does this model have?
This model features an IP55 / Type 12 enclosure, making it suitable for environments requiring increased protection compared with standard chassis drives.
Does this model include a safety function?
Yes, this configuration includes integrated Safe Stop functionality to support safer motor shutdown control.
Trusted by HVAC Engineers Worldwide
Danfoss VLT HVAC drives are widely used by building services engineers, facilities teams and system integrators to deliver dependable motor control, energy savings and efficient HVAC operation.
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.
Manufacturers
