135N5750 Danfoss VLT HVAC Drive 3.0KW/4.0HP 380-480VAC IP66

Why Choose the Danfoss 135N5750 VLT HVAC Drive?

The Danfoss 135N5750 is a compact and 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 reduce energy consumption, improve system stability and minimise mechanical stress on motors and driven equipment.

This drive combines Danfoss HVAC-specific functionality with a rugged enclosure and flexible control options, making it suitable for commercial buildings, plant rooms and demanding industrial climate control systems. The FC 102 platform provides intelligent control for pumps, fans and compressors, with straightforward commissioning through its graphical local control panel.

With a rated output power of 3.0 kW / 4.0 HP and a three-phase 380–480 V AC supply, the Danfoss 135N5750 is ideal for small to medium HVAC motor applications. Its IP66 / NEMA 4X backplate enclosure, RFI Class A1/B filter and MCB-109 I/O with RTC back-up provide a robust and flexible solution for commercial and industrial HVAC installations.

Key Advantages

• Dedicated variable frequency drive for HVAC applications.
• 3.0 kW / 4.0 HP output rating for fans, pumps and ventilation equipment.
• Three-phase 380–480 V AC input for industrial power supplies.
• IP66 / NEMA 4X backplate enclosure for high environmental protection.
• RFI Class A1/B filter for EMC performance.
• MCB-109 I/O option with RTC back-up for extended control functionality.
• Graphical Local Control Panel for simple setup and operation.

Key Features

• Danfoss VLT® HVAC Drive FC 102 series.
• 3.0 kW / 4.0 HP rated motor power.
• Three-phase 380–480 V AC supply.
• IP66 / NEMA 4X protection rating with backplate.
• Frame size A4.
• RFI Class A1/B filter.
• Graphical Local Control Panel.
• MCB-109 I/O with RTC back-up.
• No brake chopper.
• Not coated PCB.
• No mains option.

Technical Specifications

• Manufacturer: Danfoss
• Series: VLT® HVAC Drive FC 102
• Model: 135N5750
• Alternative model code: FC-102P3K0T4Y66H3XGXXXXSXXXXAXB0CXXXXDX
• Product type: AC variable frequency drive
• Rated output power: 3.0 kW
• Motor rating: 4.0 HP
• Input voltage: 380–480 V AC
• Input phases: Three phase
• Output phases: Three phase
• Frequency: 50 / 60 Hz
• Protection rating: IP66 / NEMA 4X Backplate
• Frame size: A4
• 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: No mains option
• Dimensions (H × W × D): approx. 391 × 200 × 177 mm
• Weight: approx. 8.62 kg
• EAN: 5710108219390

Energy-Efficient HVAC Motor Control

Variable frequency drives such as the Danfoss 135N5750 regulate motor speed by adjusting output voltage and frequency. This allows HVAC equipment to match motor output to real-time demand, helping reduce energy usage, improve comfort control and lower 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 MCB-109 I/O option with RTC back-up adds extra control flexibility for HVAC automation and monitoring applications.

Typical Applications

• Air handling units and ventilation systems.
• Supply and extract fans.
• Heating and cooling pumps.
• Chilled water circulation systems.
• Small compressors and refrigeration equipment.
• Building management and HVAC control systems.
• Commercial and industrial plant rooms.

Trusted by HVAC Professionals Worldwide

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.