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.
137U7784 Danfoss 250kW Three Phase iC7-Automation Variable Speed Drive
Danfoss 137U7784 iC7-Automation air-cooled frequency converter with 480 A output current, three-phase 380-500 V AC input, IP54 / UL Type 12 enclosure, Modbus TCP communication and integrated STO safety functionality.
£21,720.00
Why Choose the Danfoss 137U7784 iC7-Automation Frequency Converter?
The Danfoss 137U7784 is a high-power iC7-Automation frequency converter designed for precise and dependable control of large three-phase AC motors in demanding industrial automation environments. As part of the advanced Danfoss iC7-Automation series, it delivers robust speed control, integrated safety and modern connectivity for heavy-duty motor-driven systems.
This air-cooled drive is engineered for industrial applications requiring high output current, reliable continuous operation and seamless integration with automation networks. Its protected enclosure, Ethernet connectivity and Modbus TCP support make it suitable for process control, manufacturing, infrastructure and high-power machinery applications.
With a rated output current of 480 A and operation from a three-phase 380-500 V AC supply, the 137U7784 is ideal for large motors used in pumps, fans, compressors, conveyors and heavy-duty production equipment. The IP54 / UL Type 12 enclosure provides protection for demanding industrial installations.
Key Advantages
- High-power frequency converter for industrial automation.
- 480 A rated output current for large motor control applications.
- Three-phase 380-500 V AC input for industrial power systems.
- Integrated Safe Torque Off (STO) safety function.
- Modbus TCP enabled for automation network integration.
- Ethernet connectivity for modern industrial control systems.
- IP54 / UL Type 12 enclosure for demanding environments.
- Air-cooled construction supports reliable continuous-duty operation.
Key Features
- Danfoss iC7-Automation series.
- 480 A nominal output current.
- Three-phase 380-500 V AC input supply.
- Air-cooled frequency converter design.
- Integrated Safe Torque Off (STO) functionality.
- Modbus TCP fieldbus protocol enabled.
- Ethernet port included.
- Control Panel 2.8 OPX20 included.
- EMC category C2 filtering.
- IP54 / UL Type 12 protection rating.
Reliable Motor Control for High-Power Industrial Systems
Frequency converters such as the Danfoss 137U7784 regulate motor speed by adjusting output voltage and frequency. This helps improve process precision, reduce mechanical stress and optimise energy consumption across large industrial motor-driven systems.
The iC7-Automation platform is developed for demanding automation applications requiring high performance, robust connectivity and dependable safety functionality. With Modbus TCP, Ethernet connectivity and integrated STO, the 137U7784 can be integrated into PLC-based systems, SCADA networks and wider industrial control architectures.
Typical Applications
- Large industrial pumps and pumping stations.
- Fans, blowers and ventilation systems.
- Heavy-duty compressors.
- Conveyors and bulk material handling systems.
- Water and wastewater treatment facilities.
- Manufacturing and process machinery.
- Industrial automation control panels.
- High-power motor control applications.
Technical Specifications
Tick the specs you need, then view products that match.
| Power | 250 kW | |
|---|---|---|
| Current | 480 A | |
| Phase | Three Phase | |
| IP Rating | IP54 | |
| EMC Filter | Commercial | |
| Series | iC7-Automation | |
| Type code | 7FC-AUFA3N05-480AE54F2-000153348 | |
| Product type | Air-cooled frequency converter | |
| Rated output current | 480 A | |
| Input voltage | 380-500 V AC | |
| Input phases | 3-phase | |
| Input frequency | 50 / 60 Hz | |
| Protection rating | IP54 / UL Type 12 | |
| Frame size | FB10C | |
| EMC category | C2 | |
| Control panel | Control Panel 2.8 OPX20 | |
| Standard I/O | None | |
| Fieldbus protocol | Modbus TCP | |
| Other protocols | Ethernet port, no protocol | |
| Functional safety | STO, not upgradable | |
| Cooling method | Air-cooled |
Frequently Asked Questions
What is the Danfoss 137U7784 used for?
The Danfoss 137U7784 is used to control the speed and torque of large three-phase AC motors in industrial automation, process control and heavy-duty machinery applications.
What output current does this drive provide?
The drive has a rated output current of approximately 480 A.
What supply voltage does the drive require?
The 137U7784 operates from a three-phase 380-500 V AC supply.
Does this model include safety functionality?
Yes, the drive includes integrated Safe Torque Off (STO) functionality.
What communication options are enabled?
This model supports Modbus TCP fieldbus communication and includes an Ethernet port for automation integration.
Trusted for High-Power Automation
Danfoss iC7-Automation frequency converters are trusted by automation engineers and industrial operators for reliable motor control, advanced connectivity and efficient operation in demanding high-power applications.
