135N5849 Danfoss VLT HVAC Drive 4.0KW/5.5HP 380-480VAC IP55

Why Choose the Danfoss 135N5849 VLT HVAC Drive?

The Danfoss 135N5849 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 practical installation and control features, making it suitable for commercial buildings, plant rooms and 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 4.0 kW / 5.0 HP and a three-phase 380–480 V AC supply, the Danfoss 135N5849 is ideal for small to medium HVAC motor applications. Its IP55 / Type 12 enclosure, RFI Class A1/B filter, MCB-105 relay card and mains disconnect provide a robust and flexible solution for commercial and industrial HVAC installations.

Key Advantages

• Dedicated variable frequency drive for HVAC applications.
• 4.0 kW / 5.0 HP output rating for fans, pumps and ventilation equipment.
• Three-phase 380–480 V AC input for industrial power supplies.
• IP55 / Type 12 enclosure for enhanced installation protection.
• RFI Class A1/B filter for EMC performance.
• MCB-105 relay card for additional control and signalling functionality.
• Mains disconnect included for convenient isolation.

Key Features

• Danfoss VLT® HVAC Drive FC 102 series.
• 4.0 kW / 5.0 HP rated motor power.
• 8.2 A continuous output current.
• Three-phase 380–480 V AC supply.
• IP55 / Type 12 protection rating.
• Frame size A5.
• RFI Class A1/B filter.
• Graphical Local Control Panel.
• MCB-105 relay card.
• No brake chopper.
• Not coated PCB.
• Mains disconnect included.

Technical Specifications

• Manufacturer: Danfoss
• Series: VLT® HVAC Drive FC 102
• Model: 135N5849
• Alternative model code: FC-102P4K0T4E55H3XGX1XXSXXXXAXBPCXXXXDX
• Product type: AC variable frequency drive
• Rated output power: 4.0 kW
• Motor rating: 5.0 HP
• Continuous current: 8.2 A
• Intermittent current: 9.02 A
• 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-105 relay card
• PCB coating: Not coated PCB
• Mains option: Mains disconnect
• Dimensions (H × W × D): approx. 420 × 242 × 200 mm
• Weight: approx. 11.53 kg
• EAN: 5710108220419

Energy-Efficient HVAC Motor Control

Variable frequency drives such as the Danfoss 135N5849 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-105 relay card and mains disconnect provide additional flexibility for control, signalling and safe isolation in HVAC installations.

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.