Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
137U8144 Danfoss iC7-Automation 450kW/600 3 phase low-harmonic drive
Danfoss 137U8144 iC7-Automation enclosed drive, an air-cooled low-harmonic AC variable frequency drive rated at 820 A with 380-500 V AC three-phase input, IP21 / UL Type 1 enclosure, Modbus TCP communication and functional safety.
£78,950.25
Why Choose the Danfoss 137U8144 iC7-Automation Enclosed Drive?
The Danfoss 137U8144 is a high-performance AC variable frequency drive (VFD) from the advanced Danfoss iC7-Automation Enclosed Drive series, designed for demanding industrial motor control applications. Built as an enclosed, air-cooled drive solution, it provides reliable speed regulation, improved power quality and robust operation for modern automation and process systems.
The iC7-Automation platform is developed for industrial environments where power quality, connectivity and dependable motor control are essential. This model features a low-harmonic drive configuration, integrated Modbus TCP communication, coated boards, functional safety capability and a practical IP21 / UL Type 1 enclosure for protected industrial installations.
With a rated current of 820 A and a three-phase 380–500 V AC supply, the Danfoss 137U8144 is suitable for large motors used in conveyors, pumps, fans, compressors, process machinery and heavy-duty automation systems. Its enclosed construction supports straightforward installation while maintaining strong operational reliability in demanding applications.
Key Advantages
- High-performance iC7-Automation enclosed variable frequency drive.
- 820 A current rating for demanding industrial motor control.
- Three-phase 380–500 V AC input compatible with industrial power systems.
- Low-harmonic drive configuration helps improve power quality.
- IP21 / UL Type 1 enclosure for protected industrial installations.
- Integrated Modbus TCP communication for automation network connectivity.
- Functional safety features including STO, SS1-t and fieldbus safety support.
Key Features
- Danfoss iC7-Automation Enclosed Drive series.
- 820 A rated current.
- Three-phase 380–500 V AC input supply.
- IP21 / UL Type 1 enclosure.
- Low-harmonic air-cooled enclosed drive.
- EMC Category C3.
- Control Panel 2.8 OPX20.
- Standard I/O with relay option.
- Modbus TCP OS7MT communication.
- Functional safety: STO, SS1-t and fieldbus.
- Coated boards for improved industrial durability.
- Common-mode output filter option included in the configuration.
Low-Harmonic Motor Control for Heavy-Duty Industrial Systems
Variable frequency drives such as the Danfoss 137U8144 regulate motor speed by adjusting output frequency and voltage. This helps improve process control, reduce mechanical stress and optimise energy consumption across large industrial machines and production systems.
The iC7-Automation enclosed drive platform is suited to applications where power quality, connectivity and reliability are important. Its low-harmonic design helps reduce mains distortion, while integrated Modbus TCP communication supports smooth connection with PLCs and wider automation networks.
Typical Applications
- Heavy-duty industrial conveyors and material handling systems.
- Large pumps and water handling equipment.
- Industrial fans, blowers and ventilation systems.
- Compressors and process machinery.
- Production lines and manufacturing equipment.
- Mining, marine and heavy industrial automation systems.
- Applications requiring low-harmonic drive performance.
Technical Specifications
Tick the specs you need, then view products that match.
| Power | 450 kW | |
|---|---|---|
| Current | 820 A | |
| Voltage | 500 V | |
| Phase | Three Phase | |
| IP Rating | IP21 | |
| Series | iC7-Automation Enclosed Drives | |
| Part Number | 137U8144 | |
| Product type | AC variable frequency drive | |
| Drive type | Enclosed air-cooled low-harmonic drive | |
| Rated current | 820 A | |
| Input voltage | 380–500 V AC | |
| Input phases | 3-phase | |
| Protection rating | IP21 / UL Type 1 | |
| EMC category | C3 | |
| Frame | AE11 + IE11 | |
| Control panel | Control Panel 2.8 OPX20 | |
| Standard I/O | I/O and Relay Option OC7C1 | |
| Functional safety | STO, SS1-t, fieldbus | |
| Brake chopper | Not fitted | |
| PCB protection | Coated boards | |
| Cooling method | Air cooled | |
| Output filter | Common-mode filter option |
Frequently Asked Questions
What is the Danfoss 137U8144 used for?
The Danfoss 137U8144 is used to control the speed and torque of large three-phase AC motors in demanding industrial automation, process and machinery applications.
What current rating does this drive have?
This model has a rated current of approximately 820 A.
What supply voltage does the drive require?
The 137U8144 operates from a three-phase 380–500 V AC supply.
What enclosure rating does the Danfoss 137U8144 have?
The drive is supplied in an IP21 / UL Type 1 enclosed cabinet, suitable for protected industrial environments.
Does this drive support industrial communication?
Yes. This model includes Modbus TCP communication for integration with PLCs and industrial automation networks.
Trusted by Industrial Automation Professionals
Danfoss iC7-Automation enclosed drives are used by industrial engineers, system integrators and plant operators who require reliable motor control, improved power quality and robust performance for demanding automation environments.
