135X4974 Danfoss VLT HVAC Drive 22KW/30HP 380-480VAC IP55

Why Choose the Danfoss 135X4974 VLT® HVAC Drive?

The Danfoss 135X4974 is a robust and energy-efficient AC variable frequency drive (VFD) from the Danfoss VLT® HVAC Drive FC-102 series, designed specifically for ventilation, heating, air conditioning and refrigeration applications. Engineered for dependable motor speed control, it helps optimise the performance of fans, pumps and compressors in commercial and industrial HVAC systems.

As part of the advanced Danfoss FC-102 HVAC drive range, this unit combines dedicated HVAC functionality with reliable power electronics and flexible configuration options. It supports efficient system operation by matching motor speed to real demand, helping reduce energy consumption, mechanical stress and operating costs.

With a rated output power of 22 kW / 30 HP and a three-phase 380–480 V AC supply, the Danfoss 135X4974 is ideal for medium-power HVAC motor applications. Its IP55 / Type 12 backplate enclosure provides protection for demanding industrial and building services environments, while the MCB-109 I/O with RTC back-up option supports enhanced control functionality.

Key Advantages

• Dedicated HVAC variable frequency drive for fans, pumps and compressors.
• 22 kW / 30 HP motor power rating for medium-power HVAC applications.
• Three-phase 380–480 V AC input suitable for industrial power systems.
• IP55 / Type 12 enclosure for protected installation environments.
• RFI Class A1/B (C1) filter for improved electromagnetic compatibility.
• Graphical local control panel for easy commissioning and operation.
• MCB-109 I/O with RTC back-up for enhanced monitoring and control.
• Energy-saving motor control helps reduce HVAC operating costs.

Key Features

• Danfoss VLT® HVAC Drive FC-102 series.
• 22 kW / 30 HP rated output power.
• Three-phase 380–480 V AC input supply.
• IP55 / Type 12 protection rating.
• B2 frame size.
• RFI Class A1/B (C1) filter.
• Graphical local control panel included.
• No brake chopper configuration.
• Not coated PCB.
• No mains option.
• MCB-109 I/O, RTC back-up.
• Latest release standard software.

Technical Specifications

• Manufacturer: Danfoss
• Series: VLT® HVAC Drive FC-102
• Model: 135X4974
• Full model code: FC-102P22KT4P55H3XGXXOXSXXXXAXB0CXXXXDX
• Product type: AC variable frequency drive
• Rated output power: 22 kW / 30 HP
• Input voltage: 380–480 V AC
• Input phases: 3-phase
• Application range: HVAC, ventilation, heating and refrigeration
• Protection rating: IP55 / Type 12
• Frame size: B2
• RFI filter: Class A1/B (C1)
• Brake chopper: No
• Control panel: Graphical Local Control Panel
• PCB coating: Not coated
• Mains option: No mains option
• A option: No A option
• B option: MCB-109 I/O, RTC back-up
• C1 option: No C1 option
• D option: No D option
• Software: Latest release standard software

Efficient Motor Control for HVAC Systems

Variable frequency drives such as the Danfoss VLT® HVAC Drive FC-102 regulate motor speed by adjusting output frequency and voltage. This allows HVAC equipment to operate according to real demand, improving efficiency while reducing unnecessary energy use and mechanical wear.

The Danfoss 135X4974 is suited to building services and industrial HVAC applications where reliable fan, pump and compressor control is essential. Its HVAC-specific functions, protective enclosure and integrated control options make it a dependable choice for modern automation and climate control systems.

Typical Applications

• HVAC fan speed control.
• Air handling units and ventilation systems.
• Heating and cooling plant equipment.
• Commercial and industrial pump control.
• Refrigeration and compressor applications.
• Building management and automation systems.
• Industrial climate control systems.

Trusted by HVAC Engineers Worldwide

Danfoss VLT® HVAC Drives are widely used by building services engineers, facilities teams and automation professionals to deliver efficient motor control, reduced energy consumption and dependable HVAC performance.