135N7235 Danfoss VLT HVAC Drive 4.0KW/5.5HP 380-480VAC IP66

Why Choose the Danfoss 135N7235 VLT HVAC Drive?

The Danfoss 135N7235 is a compact and reliable AC variable speed drive (VSD) from the Danfoss VLT HVAC Drive FC 102 series, designed specifically for heating, ventilation and air conditioning applications. It provides accurate motor speed control for pumps, fans and compressors, helping improve HVAC system performance while reducing energy consumption in commercial and industrial buildings.

As part of the FC 102 HVAC drive range, this model combines dedicated HVAC functionality with simple commissioning and dependable operation. Its integrated control features make it suitable for building services applications where efficient motor management, reliability and flexible system integration are required.

With a rated output power of 4.0 kW / 5.5 HP, a three-phase 380–480 V AC supply and an IP66 / NEMA 4X enclosure, the 135N7235 is ideal for protected HVAC installations requiring robust environmental protection and compact variable speed control.

Key Advantages

• Dedicated HVAC variable speed drive for pumps, fans and compressors.
• 4.0 kW / 5.5 HP power rating for compact building services applications.
• Three-phase 380–480 V AC input for commercial and industrial power systems.
• IP66 / NEMA 4X enclosure for demanding HVAC environments.
• Integrated RFI Class A1/B (C1) filter for EMC performance.
• MCB-109 I/O option with RTC back-up for enhanced control flexibility.
• Graphical Local Control Panel for straightforward commissioning and diagnostics.

Key Features

• Danfoss VLT HVAC Drive FC 102 series.
• 4.0 kW / 5.5 HP rated output power.
• Three-phase 380–480 V AC input supply.
• IP66 / NEMA 4X enclosure rating.
• A4 frame size.
• No brake chopper.
• Integrated RFI Class A1/B (C1) filter.
• Graphical Local Control Panel included.
• MCB-109 I/O option with RTC back-up.
• Not coated PCB.
• No mains option.

Technical Specifications

• Manufacturer: Danfoss
• Series: VLT HVAC Drive FC 102
• Part number: 135N7235
• Model code: FC-102P4K0T4Y66H3XGXXXXSXXXXAXB0CXXXXDX
• Product type: AC variable speed drive
• Rated output power: 4.0 kW / 5.5 HP
• Input voltage: 380–480 V AC
• Input phases: Three phase
• Output phases: Three phase
• Protection rating: IP66 / NEMA 4X Backplate
• RFI filter: Class A1/B (C1)
• Brake chopper: No
• A option: No A option
• B option: MCB-109 I/O with RTC back-up
• Control panel: Graphical Local Control Panel
• PCB protection: Not coated PCB
• Mains option: No mains option
• Frame size: A4
• Dimensions (H × W × D): approx. 390 × 200 × 175 mm
• EAN: 5710108234287

Efficient Motor Control for HVAC Systems

The Danfoss VLT HVAC Drive FC 102 is engineered to regulate motor speed according to actual system demand. By controlling pumps, fans and compressors more accurately, it helps reduce wasted energy, improve comfort control and minimise mechanical stress on connected HVAC equipment.

The 135N7235 is particularly suitable for HVAC installations that require a robust IP66 drive with flexible I/O capability and local operation. Its graphical control panel supports simple setup, monitoring and fault diagnostics, making it a practical choice for facilities teams, building services engineers and system integrators.

Typical Applications

• HVAC air handling units.
• Commercial ventilation systems.
• Heating and chilled water pumps.
• Fan and blower applications.
• Small compressor systems.
• Building management system controlled motor applications.
• Energy-efficient commercial building services installations.

Trusted by HVAC and Building Services Engineers Worldwide

Danfoss VLT HVAC drives are trusted by building services engineers, facilities teams and system integrators to deliver efficient motor control, reliable HVAC operation and reduced energy usage across modern commercial and industrial installations.