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135X3798 Danfoss VLT HVAC Drive 1.5KW/2.0HP 380-480VAC IP66

MPN: 135X3798

Alt. SKU: FC-102P1K5T4E66H2TGXXXXSXXXXAXBXCXXXXDX

Special Price £794.16 £661.80 Regular Price £1,323.60

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Why Choose the Danfoss 135X3798 VLT® HVAC Drive?

The Danfoss 135X3798 is a high-performance AC variable frequency drive (VFD) from the renowned VLT® HVAC Drive FC-102 series, specifically engineered for heating, ventilation and air conditioning applications. Designed to deliver precise motor control, energy efficiency and dependable operation, this drive is ideal for demanding commercial and industrial HVAC systems.

Built with Danfoss' advanced motor control technology, the FC-102 series helps optimise fan, pump and compressor performance while reducing energy consumption and operational costs. The drive incorporates intelligent control functions, integrated safety features and flexible communication capabilities, allowing seamless integration into modern building management and automation systems.

With a rated output power of 1.5 kW (2.0 HP) and a three-phase 380-480 V AC supply, the Danfoss 135X3798 is suitable for a wide range of HVAC applications. Its robust IP66 / NEMA 4X enclosure provides excellent environmental protection, enabling installation in demanding locations where dust and moisture resistance are essential.

Key Advantages

  • Dedicated HVAC variable frequency drive for fans, pumps and compressors.
  • 1.5 kW (2.0 HP) motor power rating for reliable HVAC motor control.
  • Three-phase 380-480 V AC input compatible with industrial power systems.
  • Robust IP66 / NEMA 4X enclosure for harsh environments.
  • Integrated Safe Torque Off (STO) functionality.
  • Built-in RFI filter for improved electromagnetic compatibility.
  • Graphical local control panel for simplified commissioning and operation.
  • Energy-efficient operation helps reduce building running costs.

Key Features

  • Danfoss VLT® HVAC Drive FC-102 series.
  • 1.5 kW (2.0 HP) rated output power.
  • 3.4 A continuous output current.
  • Three-phase 380-480 V AC input supply.
  • IP66 / NEMA 4X environmental protection.
  • Integrated RFI filter.
  • Built-in Safe Torque Off (STO) safety function.
  • Graphical local control panel (LCP).
  • Compact and durable A5 frame design.
  • Suitable for HVAC automation and building management systems.

Technical Specifications

  • Manufacturer: Danfoss
  • Series: VLT® HVAC Drive FC-102
  • Model: 135X3798
  • Alternative model code: FC-102P1K5T4E66H2TGXXXXSXXXXAXBXCXXXXDX
  • Product type: AC variable frequency drive
  • Rated output power: 1.5 kW (2.0 HP)
  • Continuous output current: 3.4 A
  • Input voltage: 380-480 V AC
  • Input phases: 3-phase
  • Protection rating: IP66 / NEMA 4X
  • Frame size: A5
  • Integrated EMC/RFI filter: Yes
  • Safety function: Safe Torque Off (STO)
  • Control panel: Graphical Local Control Panel
  • Dimensions (H × W × D): approx. 420 × 242 × 200 mm
  • Weight: approx. 10.8 kg

Optimised Motor Control for HVAC Systems

The Danfoss FC-102 HVAC Drive is designed specifically for heating, ventilation and air conditioning applications where energy efficiency and reliable motor performance are critical. By continuously adjusting motor speed to match system demand, the drive reduces energy consumption, minimises mechanical wear and improves overall system performance.

Advanced HVAC-specific functionality allows efficient control of pumps, fans and compressors while supporting building automation requirements. Integrated safety features and communication capabilities simplify installation and maintenance throughout the product lifecycle.

Typical Applications

  • HVAC fan control systems.
  • Commercial and industrial pump applications.
  • Air handling units (AHUs).
  • Ventilation and extraction systems.
  • Chillers and cooling systems.
  • Building management and automation systems.
  • Compressors and process cooling equipment.

Frequently Asked Questions

What is the Danfoss 135X3798 used for?

The drive is designed to control the speed and torque of AC motors used in HVAC systems including fans, pumps and compressors.

What motor size can this drive control?

The drive is rated for motors up to approximately 1.5 kW (2.0 HP).

What supply voltage does the drive require?

The 135X3798 operates from a three-phase 380-480 V AC power supply.

Does the drive include safety features?

Yes, it includes an integrated Safe Torque Off (STO) function for enhanced operational safety.

What environmental protection rating does it have?

The drive features an IP66 / NEMA 4X enclosure, providing excellent protection against dust and water ingress.

Trusted by HVAC Engineers Worldwide

Danfoss VLT® HVAC Drives are widely trusted by building services engineers and automation professionals for their energy efficiency, reliability and advanced HVAC-specific motor control capabilities.
More Information
Manufacturer Part Number 135X3798
Barcode 5710108400835
Height 420mm
Width 242mm
Depth 200mm
Filter Filter Included
Input Phases Three Phase
Degree of protection (IP) IP66
KW Rating 1.5kW
Output Phases Three phase
VSD Range Danfoss VLT FC102
Manufacturer Danfoss
Alternative Product SKU FC-102P1K5T4E66H2TGXXXXSXXXXAXBXCXXXXDX
Write Your Own Review
You're reviewing:135X3798 Danfoss VLT HVAC Drive 1.5KW/2.0HP 380-480VAC IP66

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.