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136H3743 Danfoss VLT HVAC Drive 18.5KW/25HP 380-480VAC IP55
MPN: 136H3743
Alt. SKU: FC-102P18KT4P55H3TGXXOXSXXXXANBKCXXXXDX
Special Price
£2,675.52
£2,229.60
Regular Price
£4,459.20
Why Choose the Danfoss 136H3743 VLT® HVAC Drive?
The Danfoss 136H3743 is a robust and efficient AC variable frequency drive (VFD) from the Danfoss VLT® HVAC Drive FC 102 series. Designed for heating, ventilation and air conditioning systems, this drive provides precise motor speed control for fans, pumps, air handling units and building services equipment.
The VLT® HVAC Drive FC 102 range is engineered to optimise HVAC performance while helping reduce energy consumption, mechanical wear and system operating costs. With advanced control functionality, integrated RFI filtering, Safe Stop capability and a graphical local control panel, the 136H3743 is well suited to commercial and industrial HVAC installations.
With a rated output power of 18.5 kW (25 HP) and a three-phase 380–480 V AC supply, the Danfoss 136H3743 is ideal for demanding HVAC motor control applications. Its IP55 / Type 12 enclosure provides strong protection for plant rooms, mechanical services areas and industrial environments.
Key Advantages
- Dedicated HVAC variable frequency drive for fans, pumps and building services.
- 18.5 kW motor power rating suitable for commercial and industrial HVAC equipment.
- Three-phase 380–480 V AC input compatible with standard industrial power systems.
- IP55 / Type 12 enclosure for enhanced environmental protection.
- Integrated RFI Class A1/B (C1) filter for reduced electrical interference.
- Safe Stop functionality for improved machine and system safety.
- EtherNet/IP MCA 121 communication option for automation integration.
- Includes MCB 101 general purpose I/O for flexible control connections.
Key Features
- Danfoss VLT® HVAC Drive FC 102 series.
- 18.5 kW (25 HP) rated output power.
- Three-phase 380–480 V AC input supply.
- IP55 / Type 12 protection rating.
- Integrated RFI Class A1/B (C1) filter.
- Safe Stop safety function.
- Graphical Local Control Panel included.
- EtherNet/IP MCA 121 communication module.
- MCB 101 general purpose I/O option.
- No brake chopper fitted.
- Not coated PCB.
- No mains option.
- Frame size B1.
Technical Specifications
- Manufacturer: Danfoss
- Series: VLT® HVAC Drive FC 102
- Model: 136H3743
- Catalogue number: FC-102P18KT4P55H3TGXXOXSXXXXANBKCXXXXDX
- Product type: AC variable frequency drive
- Rated output power: 18.5 kW
- Horsepower rating: 25 HP
- Input voltage: 380–480 V AC
- Input phases: 3-phase
- Output phases: 3-phase
- Frequency: 50 / 60 Hz
- Protection rating: IP55 / Type 12
- RFI filter: Class A1/B (C1)
- Safety function: Safe Stop
- Brake chopper: Not included
- Control panel: Graphical Local Control Panel
- Communication: EtherNet/IP MCA 121
- I/O option: MCB 101 general purpose I/O
- PCB coating: Not coated
- Mains option: None
- Frame size: B1
- Dimensions (H × W × D): approx. 480 × 242 × 260 mm
- Weight: approx. 23.01 kg
Efficient Motor Control for HVAC Systems
Variable frequency drives such as the Danfoss 136H3743 regulate motor speed by adjusting the voltage and frequency supplied to the motor. This enables HVAC systems to match fan or pump output to actual demand, improving efficiency while reducing unnecessary energy use.
The FC 102 series is purpose-built for HVAC applications and supports reliable operation of fans, pumps, ventilation systems, chillers and building automation equipment. With its IP55 enclosure, integrated RFI filtering and EtherNet/IP communication capability, this model is well suited to protected and networked HVAC installations.
Typical Applications
- Air handling units and ventilation systems.
- Commercial and industrial HVAC fans.
- Heating and cooling circulation pumps.
- Building management systems.
- Chiller and cooling tower applications.
- Plant room motor control installations.
- Industrial ventilation and extraction systems.
- Energy-efficient HVAC retrofit projects.
Frequently Asked Questions
What is the Danfoss 136H3743 used for?
The Danfoss 136H3743 is used to control three-phase AC motors in HVAC applications such as fans, pumps, air handling units, ventilation systems and building services equipment.
What motor power is supported by this drive?
This drive is rated for motors with an output power of approximately 18.5 kW (25 HP).
What supply voltage does the Danfoss 136H3743 require?
The drive operates from a three-phase 380–480 V AC supply.
What enclosure rating does this drive have?
The Danfoss 136H3743 has an IP55 / Type 12 enclosure, offering protection suitable for demanding HVAC and industrial environments.
Does this model support industrial communications?
Yes. This configuration includes EtherNet/IP MCA 121 communication and an MCB 101 general purpose I/O option for integration with automation and control systems.
Trusted by HVAC Engineers Worldwide
Danfoss VLT® HVAC drives are trusted by building services engineers, contractors and facility managers for reliable motor control, efficient operation and long-term HVAC system performance.
| Manufacturer Part Number | 136H3743 |
|---|---|
| Barcode | 5710108702663 |
| Height | 480mm |
| Width | 242mm |
| Depth | 260mm |
| Filter | Filter Included |
| Input Phases | Three Phase |
| Degree of protection (IP) | IP55 |
| KW Rating | 18.5kW |
| Output Phases | Three phase |
| VSD Range | Danfoss VLT FC102 |
| Manufacturer | Danfoss |
| Alternative Product SKU | FC-102P18KT4P55H3TGXXOXSXXXXANBKCXXXXDX |
Write Your Own Review
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.
