Danfoss 135N4156 VLT HVAC Drive FC 102, a 7.5 kW three phase AC variable frequency drive with IP55 Type 12 enclosure, mains disconnect and MCB-109 I/O with RTC back-up for HVAC applications.
£1,764.00
The Danfoss 135N4156 is a dependable and energy-efficient AC variable frequency drive (VFD) from the Danfoss VLT® HVAC Drive FC 102 series, designed for precise motor speed control in heating, ventilation, air conditioning and refrigeration applications. Built for HVAC environments, it helps improve energy performance, reduce mechanical stress and support reliable operation across building services and industrial systems.
This drive combines Danfoss HVAC-specific functionality with practical installation features, making it suitable for plant rooms, commercial buildings and connected climate control systems. The FC 102 platform supports efficient control of pumps, fans and compressors, while the graphical control panel simplifies commissioning, monitoring and operation.
With a rated output power of 7.5 kW / 10 HP and a three-phase 380–480 V AC supply, the Danfoss 135N4156 is ideal for medium-duty HVAC motor applications. Its IP55 / Type 12 enclosure with backplate, mains disconnect and MCB-109 I/O with RTC back-up provide a robust and flexible solution for commercial and industrial HVAC installations.
Variable frequency drives such as the Danfoss 135N4156 regulate motor speed by adjusting output voltage and frequency. This enables HVAC equipment to match motor output to real-time demand, reducing energy use, improving comfort control and lowering wear on mechanical components.
The FC 102 series is developed specifically for HVAC control, supporting efficient airflow, pressure and temperature regulation across modern building services and industrial systems. Its integrated pump, fan and compressor functionality helps reduce the need for external control equipment in many applications.
| Power | 7.5 kW |
|---|---|
| Voltage | 480 V |
| Phase | Three Phase |
| IP Rating | IP55 |
| Series | VLT® HVAC Drive FC 102 |
| Alternative model code | FC-102P7K5T4P55H3XGX1XXSXXXXAXB0CXXXXDX |
| Product type | AC variable frequency drive |
| Rated output power | 7.5 kW |
| Motor rating | 10 HP |
| Input voltage | 380–480 V AC |
| Input phases | Three phase |
| Output phases | Three phase |
| Frequency | 50 / 60 Hz |
| Protection rating | IP55 / Type 12 |
| Frame size | A5 |
| RFI filter | Class A1/B (C1) |
| Brake chopper | No |
| Control panel | Graphical Local Control Panel |
| Option card | MCB-109 I/O with RTC back-up |
| PCB coating | Not coated PCB |
| Mains option | Mains disconnect |
| Software | Latest release standard software |
| Dimensions (H × W × D) | approx. 420 × 242 × 200 mm |
| Weight | approx. 13.59 kg |
| EMC Filter | Commercial |
The Danfoss 135N4156 is used to control the speed and torque of AC motors in HVAC systems, including fans, pumps, compressors and ventilation equipment.
This drive is rated for 7.5 kW / 10 HP motor applications.
The drive operates from a three-phase 380–480 V AC supply.
The Danfoss 135N4156 has an IP55 / Type 12 enclosure with backplate, providing enhanced protection for suitable commercial and industrial HVAC environments.
This configuration includes the MCB-109 I/O option with RTC back-up, offering additional control and real-time clock functionality.
Danfoss VLT® HVAC Drives are widely used by building services engineers, facilities teams and automation specialists for reliable motor control, energy-efficient operation and long-term HVAC performance.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...