135N8953 Danfoss VLT HVAC Drive 4.0KW/5.5HP 380-480VAC IP66

Why Choose the Danfoss 135N8953 VLT HVAC Drive?

The Danfoss 135N8953 is a compact and reliable AC variable speed drive (VSD) from the Danfoss VLT HVAC Drive FC 102 series, designed specifically for heating, ventilation and air conditioning applications. It provides precise motor speed control for pumps, fans and compressors, helping improve HVAC system efficiency while reducing energy consumption in commercial and industrial buildings.

As part of the FC 102 HVAC drive range, this model combines dedicated HVAC functionality with reliable operation and a robust enclosure design. Its integrated control features help simplify system design, reduce the need for external control equipment and support efficient motor management in building services applications.

With a rated output power of 4.0 kW / 5.5 HP, a three-phase 380–480 V AC supply and an IP66 / NEMA 4X enclosure, the 135N8953 is ideal for protected HVAC installations requiring compact variable speed control and high environmental protection.

Key Advantages

• Dedicated HVAC variable speed drive for pumps, fans and compressors.
• 4.0 kW / 5.5 HP power rating for building services applications.
• Three-phase 380–480 V AC input for commercial and industrial power systems.
• IP66 / NEMA 4X enclosure for demanding protected installations.
• Integrated RFI Class A1/B (C1) filter for EMC performance.
• Compact A5 frame design for practical HVAC installation.
• No A or B options fitted, providing a straightforward standard drive configuration.

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.
• IP66 / NEMA 4X enclosure rating.
• A5 frame size.
• No brake chopper.
• Integrated RFI Class A1/B (C1) filter.
• No Local Control Panel fitted.
• No A option.
• No B option.
• Not coated PCB.
• No mains option.

Technical Specifications

• Manufacturer: Danfoss
• Series: VLT HVAC Drive FC 102
• Part number: 135N8953
• Model code: FC-102P4K0T4E66H3XXXXOXSXXXXAXBXCXXXXDX
• Product type: AC variable speed drive
• Rated output power: 4.0 kW / 5.5 HP
• Output current: 10 A
• Input voltage: 380–480 V AC
• Input phases: Three phase
• Output phases: Three phase
• Protection rating: IP66 / NEMA 4X
• RFI filter: Class A1/B (C1)
• Brake chopper: No
• A option: No A option
• B option: No B option
• Control panel: No Local Control Panel
• PCB protection: Not coated PCB
• Mains option: No mains option
• Adaptation A: Metric thread cable entry
• Frame size: A5

Efficient Motor Control for HVAC Systems

The Danfoss VLT HVAC Drive FC 102 is engineered to regulate motor speed according to real system demand. By adjusting the output to pumps, fans and compressors, it helps reduce wasted energy, improve comfort control and minimise mechanical stress on connected HVAC equipment.

The 135N8953 is particularly suitable for HVAC installations that require a robust IP66 drive with a straightforward standard configuration. Its compact enclosure, integrated EMC filtering and HVAC-focused control functionality make it a practical choice for facilities teams, building services engineers and system integrators.

Typical Applications

• HVAC air handling units.
• Commercial ventilation systems.
• Heating and chilled water pumps.
• Fan and blower applications.
• Small compressor systems.
• Rooftop HVAC units.
• Energy-efficient commercial building services installations.

Trusted by HVAC and Building Services Engineers Worldwide

Danfoss VLT HVAC drives are trusted by building services engineers, facilities teams and system integrators to deliver efficient motor control, reliable HVAC operation and reduced energy usage across modern commercial and industrial installations.