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131B6976 Danfoss VLT FC-102 HVAC Drive 37 KW / 50 HP, 380 - 480 VAC, IP55

MPN: 131B6976

Alt. SKU: FC-102P37KT4E55H3XGXXXXSXXXXAXBXCXXXXDX

Special Price £3,553.20 £2,961.00 Regular Price £5,922.00

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Why Choose the Danfoss 131B6976 VLT® HVAC Drive FC-102?

The Danfoss 131B6976 is a dependable and energy-efficient AC variable frequency drive (VFD) designed for precise motor speed control in HVAC, ventilation, heating and refrigeration applications. As part of the proven Danfoss VLT® HVAC Drive FC-102 series, it is engineered to improve system efficiency, reduce energy consumption and deliver reliable performance in commercial and industrial environments.

This drive provides intelligent HVAC motor control with application-focused functionality for pumps, fans, compressors and air handling equipment. Its robust construction and flexible configuration make it suitable for building automation systems, plant rooms and industrial HVAC installations requiring dependable long-term operation.

With a rated output power of 37 kW / 50 HP and a three-phase 380–480 V AC supply, the Danfoss 131B6976 is ideal for medium-to-large HVAC motors. Its IP55 / Type 12 enclosure provides enhanced protection for demanding indoor environments and installations where greater environmental resistance is required.

Key Advantages

  • Purpose-built HVAC variable frequency drive for commercial and industrial applications.
  • 37 kW / 50 HP motor power rating suitable for pumps, fans and compressors.
  • Three-phase 380–480 V AC input compatible with industrial power systems.
  • IP55 / Type 12 enclosure for enhanced environmental protection.
  • Integrated RFI Class A1/B (C1) filter for improved electromagnetic compatibility.
  • Efficient speed control helps reduce energy use, noise and mechanical wear.

Key Features

  • Danfoss VLT® HVAC Drive FC-102 series.
  • 37 kW rated output power.
  • 50 HP motor power rating.
  • 73 A continuous output current.
  • Three-phase 380–480 V AC input supply.
  • IP55 / Type 12 enclosure.
  • C1 frame size.
  • Integrated RFI Class A1/B (C1) filter.
  • No brake chopper configuration.
  • Latest release standard software installed.

Technical Specifications

  • Manufacturer: Danfoss
  • Series: VLT® HVAC Drive FC-102
  • Part Number: 131B6976
  • Model: FC-102P37KT4E55H3XGXXXXSXXXXAXBXCXXXXDX
  • Product type: AC variable frequency drive
  • Rated output power: 37 kW / 50 HP
  • Continuous output current: 73 A
  • Input voltage: 380–480 V AC
  • Input phases: 3-phase
  • Output phases: 3-phase
  • Frequency: 50 / 60 Hz
  • Protection rating: IP55 / Type 12
  • Frame size: C1
  • RFI filter: Class A1/B (C1)
  • Brake chopper: No brake chopper
  • PCB coating: Not coated PCB
  • Mains option: No mains option
  • Dimensions (H × W × D): approx. 685 × 308 × 311 mm
  • Net weight: approx. 39.79 kg

Reliable HVAC Motor Control and Energy Efficiency

Variable frequency drives such as the Danfoss FC-102 regulate motor speed by adjusting output voltage and frequency. This allows HVAC equipment to operate only as fast as required, improving energy efficiency while reducing mechanical stress on motors, fans, pumps and compressors.

The FC-102 series is specifically designed for HVAC professionals who require dependable performance, straightforward commissioning and integration with modern building management systems. Its application-focused features help optimise ventilation, heating, refrigeration and pumping systems across a wide range of installations.

Typical Applications

  • Air handling units and ventilation systems.
  • HVAC pumps and circulation systems.
  • Cooling towers and condenser fans.
  • Compressors and refrigeration equipment.
  • Commercial building management systems.
  • Industrial HVAC and process cooling applications.

Frequently Asked Questions

What is the Danfoss 131B6976 used for?

This drive is used to control AC motors in HVAC systems, including fans, pumps, compressors, ventilation systems and refrigeration equipment.

What motor power is supported by this drive?

The Danfoss 131B6976 supports motors rated up to 37 kW / 50 HP.

What supply voltage does the drive require?

The drive operates from a three-phase 380–480 V AC supply.

What enclosure protection does this model have?

This model features an IP55 / Type 12 enclosure, making it suitable for demanding indoor HVAC and plant room installations.

Does the Danfoss 131B6976 include EMC filtering?

Yes, this drive includes an integrated RFI Class A1/B (C1) filter for improved electromagnetic compatibility.

Trusted by HVAC Professionals Worldwide

Danfoss VLT® HVAC Drives are trusted by building services engineers, contractors and automation specialists to deliver efficient motor control, reliable operation and long-term HVAC performance.
More Information
Manufacturer Part Number 131B6976
Barcode 5702427350441
Height 685mm
Width 308mm
Depth 311mm
Filter Filter Included
Input Phases Three Phase
Degree of protection (IP) IP55
KW Rating 37kW
Output Phases Three phase
VSD Range Danfoss VLT FC102
Manufacturer Danfoss
Alternative Product SKU FC-102P37KT4E55H3XGXXXXSXXXXAXBXCXXXXDX
Write Your Own Review
You're reviewing:131B6976 Danfoss VLT FC-102 HVAC Drive 37 KW / 50 HP, 380 - 480 VAC, IP55

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.