131G3933 Danfoss VLT FC-102 HVAC Drive 37 KW / 50 HP, 380 - 480 VAC, IP20

Why Choose the Danfoss 131G3933 VLT® HVAC Drive FC 102?

The Danfoss 131G3933 is a high-performance VLT® HVAC Drive FC 102 variable frequency drive (VFD) designed for heating, ventilation, air conditioning and refrigeration applications. It provides precise motor speed control for HVAC pumps, fans and compressors, helping improve energy efficiency, reduce mechanical stress and support stable system performance.

As part of the trusted Danfoss FC 102 HVAC drive series, the 131G3933 combines HVAC-specific functionality with reliable drive technology. It is well suited to commercial building services, plant rooms, ventilation systems and automation systems where accurate motor control, Safe Stop functionality and fieldbus communication are required.

With a rated output power of 37 kW (50 HP) and a three-phase 380-480 V AC supply, the Danfoss 131G3933 is ideal for larger HVAC motor applications. Its IP20 / chassis enclosure is designed for protected cabinet installation, while the PROFIBUS DP MCA 101 option supports integration with compatible automation networks.

Key Advantages

• Purpose-built HVAC variable frequency drive for pumps, fans and refrigeration equipment.
• 37 kW (50 HP) motor power rating for larger HVAC systems.
• Three-phase 380-480 V AC input for commercial and industrial power supplies.
• IP20 / chassis format for protected electrical cabinet installation.
• Integrated Safe Stop functionality for enhanced system safety.
• PROFIBUS DP MCA 101 communication option for automation network integration.
• Graphical local control panel for straightforward setup and operation.

Key Features

• Danfoss VLT® HVAC Drive FC 102 series.
• 37 kW rated output power.
• 50 HP motor rating.
• Three-phase 380-480 V AC input supply.
• IP20 / chassis protection rating.
• RFI Class A1/B (C1) filter.
• Safe Stop functionality.
• Graphical local control panel included.
• PROFIBUS DP MCA 101 communication option.
• Not coated PCB.
• No mains option.
• Frame size B4.

Technical Specifications

• Manufacturer: Danfoss
• Series: VLT® HVAC Drive FC 102
• Model: 131G3933
• Type code: FC-102P37KT4E20H1TGXXXXSXXXXA0BXCXXXXDX
• Product type: Variable frequency drive
• Rated output power: 37 kW
• Horsepower rating: 50 HP
• Input voltage: 380-480 V AC
• Input phases: Three phase
• Output phases: Three phase
• Frequency: 50 / 60 Hz
• Protection rating: IP20 / chassis
• RFI filter: Class A1/B (C1)
• Safety function: Safe Stop
• Control panel: Graphical local control panel
• Communication option: PROFIBUS DP MCA 101
• PCB coating: Not coated PCB
• Mains option: No mains option
• B option: No B option
• C1 option: No C1 option
• D option: No D option
• Frame size: B4
• Weight: approx. 23.8 kg

Efficient Motor Control for Larger HVAC Systems

The Danfoss VLT® HVAC Drive FC 102 is engineered to optimise motor-driven HVAC equipment by adjusting motor speed to match real operating demand. This helps reduce unnecessary energy consumption while improving airflow, pressure and temperature control across building services and industrial HVAC systems.

The 131G3933 is particularly suitable for cabinet-mounted HVAC control systems requiring Safe Stop and fieldbus communication. Its PROFIBUS DP option supports connection to compatible automation networks, while the graphical local control panel simplifies commissioning, monitoring and maintenance.

Typical Applications

• Large HVAC fan systems.
• Air handling units and ventilation equipment.
• Heating and chilled water pumps.
• Commercial building services.
• Industrial ventilation systems.
• Refrigeration and cooling equipment.
• Building automation and BMS integration.
• Energy-efficient HVAC retrofit projects.

Trusted by HVAC Professionals Worldwide

Danfoss VLT® HVAC Drives are widely used by engineers, contractors and facilities managers to deliver efficient, reliable and intelligent motor control in demanding HVAC applications.