Danfoss 131L9881 VLT HVAC Drive FC-101 37kW Three Phase 380 - 480 VAC IP20

Why Choose the Danfoss 131L9881 VLT® HVAC Basic Drive FC 101?

The Danfoss 131L9881 is a powerful and efficient AC variable frequency drive (VFD) from the trusted Danfoss VLT® HVAC Basic Drive FC 101 series. Designed for heating, ventilation, air conditioning and simple compressor applications, it provides reliable motor speed control while helping reduce energy consumption, operating costs and mechanical stress.

This drive is engineered for HVAC engineers, facilities teams, OEMs and panel builders who require dependable motor control in commercial and industrial environments. The FC 101 series combines straightforward commissioning, practical HVAC functionality and robust performance for fans, pumps and building services equipment.

With a rated output power of 37 kW, a three-phase 380–480 V AC supply and an IP20 chassis enclosure, the Danfoss 131L9881 is ideal for large HVAC motor applications. It also includes an integrated RFI Class A2 / C3 filter, H6 frame construction and a configuration without brake chopper or optional expansion modules.

Key Advantages

• Reliable variable frequency drive designed for HVAC applications.
• 37 kW motor power rating suitable for large fans, pumps and simple compressors.
• Three-phase 380–480 V AC input for industrial and commercial power systems.
• IP20 chassis format for installation inside electrical control panels.
• Integrated RFI Class A2 / C3 filter for reduced electromagnetic interference.
• Designed for low overall cost of ownership in OEM and HVAC systems.
• Energy-efficient speed control helps optimise HVAC system performance.

Key Features

• Danfoss VLT® HVAC Basic Drive FC 101 series.
• 37 kW rated output power.
• 50 HP motor rating.
• 73 A nominal output current.
• Three-phase 380–480 V AC input supply.
• IP20 / chassis enclosure rating.
• Integrated RFI Class A2 / C3 filter.
• No local control panel fitted.
• No brake chopper configuration.
• Frame size H6 construction.

Technical Specifications

• Manufacturer: Danfoss
• Series: VLT® HVAC Basic Drive FC 101
• Part number: 131L9881
• Model code: FC-101P37KT4E20H2XXXXXXSXXXXAXBXCXXXXDX
• Product type: AC variable frequency drive
• Rated output power: 37 kW
• Horsepower rating: 50 HP
• Rated output current: 73 A
• Input voltage: 380–480 V AC
• Input phases: 3-phase
• Frequency: 50 / 60 Hz
• Output frequency: 0–400 Hz
• Protection rating: IP20 / chassis
• RFI filter: Class A2 / C3
• Local control panel: Not fitted
• Brake chopper: Not fitted
• PCB coating: Not coated
• Frame size: H6
• Dimensions (W × H × D): approx. 239 × 518 × 242 mm
• Net weight: approx. 21.65 kg
• Gross weight: approx. 21.95 kg
• EAN: 5702427807716

Efficient Motor Control for HVAC Systems

Variable frequency drives such as the Danfoss VLT® HVAC Basic Drive FC 101 regulate motor speed by adjusting the output voltage and frequency. This allows HVAC equipment to match real process demand, improving efficiency while reducing wear on motors, fans, pumps and associated mechanical components.

The Danfoss 131L9881 is particularly suited to variable-torque applications where energy savings can be achieved by reducing motor speed during low-demand periods. Its integrated EMC filtering and IP20 chassis format make it a practical solution for modern building services and industrial HVAC control panel installations.

Typical Applications

• Large HVAC fan and ventilation systems.
• Air handling units and building services equipment.
• Commercial and industrial pumps.
• Simple compressor applications.
• Cooling and heating systems.
• Building management and energy-saving installations.

Trusted by HVAC Engineers Worldwide

Danfoss VLT® HVAC Basic Drive FC 101 units are widely used by building services engineers, OEMs and facilities teams to deliver reliable motor control, energy-efficient operation and dependable HVAC system performance.