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137U3255 Danfoss 355kW Three Phase iC7-Automation Variable Speed Drive
Danfoss 137U3255 iC7-Automation frequency converter, an air-cooled three phase AC drive with 380-500 V AC input, 658 A output, 355 kW power rating, PROFINET RT connectivity and integrated STO safety.
£26,460.00
Why Choose the Danfoss 137U3255 iC7-Automation Frequency Converter?
The Danfoss 137U3255 is a high-capacity iC7-Automation frequency converter designed for precise and reliable control of three-phase AC motors in demanding industrial automation and process applications. As part of the advanced Danfoss iC7-Automation drive series, it delivers powerful motor control, flexible connectivity and dependable performance for large-scale machinery and industrial systems.
This air-cooled frequency converter is engineered for installations where robust drive performance, functional safety and automation network integration are essential. Its IP20/Open Type construction is suitable for cabinet installation, while the integrated control panel, standard I/O and communication options support straightforward integration into modern control systems.
With a three-phase 380–500 V AC supply, 658 A rated output current, 355 kW / 500 hp power rating, PROFINET RT fieldbus support and integrated Safe Torque Off (STO), the Danfoss 137U3255 provides efficient, network-ready motor control for demanding industrial environments.
Key Advantages
- High-capacity Danfoss iC7-Automation frequency converter for demanding motor control applications.
- 658 A rated output current for large industrial motor systems.
- 355 kW / 500 hp power rating for heavy-duty automation equipment.
- Three-phase 380–500 V AC input compatible with industrial power supplies.
- Integrated Safe Torque Off (STO) functional safety.
- PROFINET RT enabled for PLC and automation network integration.
- IP20/Open Type design suitable for cabinet and control panel mounting.
Key Features
- Danfoss iC7-Automation drive series.
- Air-cooled frequency converter design.
- 658 A rated output current.
- 355 kW / 500 hp power rating.
- Three-phase 380–500 V AC input supply.
- IP20/Open Type protection rating.
- Frame size FA11.
- EMC category C2.
- Control Panel 2.8 OPX20 included.
- Standard I/O with digital inputs, digital input/output, analogue inputs, analogue output and relay outputs.
- PROFINET RT fieldbus protocol enabled.
- Ethernet port available with no additional protocol.
- Integrated Safe Torque Off (STO), not upgradable.
- Coated boards and AC fuses included according to the model code.
Powerful Motor Control for Industrial Automation
Frequency converters such as the Danfoss 137U3255 regulate motor speed and torque by adjusting the frequency and voltage supplied to the motor. This enables improved process control, reduced mechanical stress and better energy performance across demanding industrial systems.
The iC7-Automation platform is designed for applications where reliable drive performance, industrial communication and functional safety are essential. With PROFINET RT connectivity and integrated I/O, the Danfoss 137U3255 can be incorporated into PLC-based automation systems and advanced control networks.
Typical Applications
- Large industrial machinery and process equipment.
- Heavy-duty conveyors and material handling systems.
- Pumps, fans and ventilation systems.
- Industrial production lines and manufacturing equipment.
- OEM machinery and automation panels.
- PLC-controlled motor drive systems.
Technical Specifications
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| Power | 355 kW | |
|---|---|---|
| Current | 658 A | |
| Phase | Three Phase | |
| IP Rating | IP20 | |
| EMC Filter | Commercial | |
| Series | iC7-Automation | |
| Catalogue number | 7FC-AUFA3N05-658AE20F2-000143419 | |
| Model code | IC7-60FA3N05-658AE20F2+AGCX+AJFX+BAPR+BDBA+BEF1+BF20+DAAU | |
| Product type | Frequency converter / AC drive | |
| Cooling method | Air-cooled | |
| Input voltage | 380–500 V AC | |
| Input phases | 3-phase | |
| Rated output current | 658 A | |
| Power rating | 355 kW / 500 hp | |
| Protection rating | IP20 / Open Type | |
| Frame size | FA11 | |
| EMC category | C2 | |
| Control panel | Control Panel 2.8 OPX20 | |
| Standard I/O | 4 x DI, 2 x DI/O, 2 x AI, 1 x AO, 2 x RO | |
| Fieldbus protocol | PROFINET RT OS7PR | |
| Other protocol | Ethernet port, no protocol | |
| Functional safety | Safe Torque Off (STO), not upgradable | |
| Interface board | MicroSD card reader and RTC | |
| Gross weight | approx. 252.41 kg | |
| Net weight | approx. 196.3 kg | |
| Mounting type | Cabinet / panel mounting |
Frequently Asked Questions
What is the Danfoss 137U3255 used for?
The Danfoss 137U3255 is used to control the speed and torque of three-phase AC motors in industrial automation, machinery and process control applications.
What supply voltage does this drive require?
The drive operates from a three-phase 380–500 V AC supply.
What is the rated output current?
The Danfoss 137U3255 has a rated output current of 658 A.
What is the power rating of this frequency converter?
The Danfoss 137U3255 has a power rating of approximately 355 kW / 500 hp.
Does this frequency converter support PROFINET?
Yes, the drive includes PROFINET RT fieldbus protocol support for industrial automation network integration.
Does the Danfoss 137U3255 include functional safety?
Yes, it includes integrated Safe Torque Off (STO) functionality.
Trusted by Industrial Automation Engineers
Danfoss iC7-Automation frequency converters are trusted by engineers, machine builders and industrial operators for reliable motor control, efficient performance and seamless integration into demanding automation environments.
