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137N3520 Danfoss 250kW Three Phase iC7-Automation Variable Speed Drive
Danfoss 137N3520 iC7-Automation frequency converter, an air-cooled 480 A three-phase 380-500 V AC variable frequency drive with Modbus TCP, Ethernet connectivity and integrated STO safety functionality.
£19,225.50
Why Choose the Danfoss 137N3520 iC7-Automation Frequency Converter?
The Danfoss 137N3520 is a high-performance iC7-Automation frequency converter designed for precise and efficient control of three-phase AC motors in demanding industrial automation applications. As part of the advanced Danfoss iC7-Automation drive series, it delivers reliable variable speed control for high-power machinery, process systems and industrial motor control installations.
This air-cooled frequency converter is engineered to provide dependable motor performance, flexible system integration and efficient operation. With integrated safety functionality, standard I/O and Ethernet-based communication capability, the Danfoss 137N3520 is well suited to modern automation environments requiring robust performance and scalable connectivity.
With a 480 A rated current, three-phase 380–500 V AC supply and IP20 / Open Type construction, the 137N3520 is ideal for demanding high-power drive applications. Its FA10 frame design supports cabinet installation within industrial control panels and drive systems.
Key Advantages
- High-power Danfoss iC7-Automation frequency converter.
- 480 A current rating for demanding industrial motor applications.
- Three-phase 380–500 V AC input suitable for industrial power systems.
- Air-cooled construction for reliable thermal performance.
- Integrated Safe Torque Off (STO) safety functionality.
- Modbus TCP and Ethernet connectivity for automation integration.
Key Features
- Danfoss iC7-Automation drive series.
- 480 A rated current.
- Three-phase 380–500 V AC input supply.
- IP20 / Open Type protection format.
- FA10 frame size.
- Air-cooled frequency converter construction.
- EMC category C2.
- Control Panel 2.8 OPX20.
- Standard I/O including digital inputs, analogue inputs, analogue output and relay outputs.
- Modbus TCP fieldbus protocol enabled.
- Ethernet port included.
- Integrated STO safety function.
Reliable Motor Control for Industrial Automation
Frequency converters such as the Danfoss 137N3520 regulate motor speed by adjusting the voltage and frequency supplied to the motor. This enables industrial systems to improve energy efficiency, maintain accurate process control and reduce mechanical stress on motors and driven equipment.
The iC7-Automation platform is designed for demanding industrial environments where high current capacity, safety integration and communication flexibility are essential. Its built-in I/O, Modbus TCP support and Ethernet connectivity make it suitable for PLC-based control systems and advanced automation architectures.
Typical Applications
- High-power industrial motor control systems.
- Pumps, fans and compressor applications.
- Conveyors and material handling systems.
- Process automation and production machinery.
- Water treatment and industrial utility systems.
- OEM machinery and system integration projects.
Technical Specifications
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| Power | 250 kW | |
|---|---|---|
| Current | 480 A | |
| Phase | Three Phase | |
| IP Rating | IP20 | |
| EMC Filter | Commercial | |
| Series | iC7-Automation | |
| Catalogue number | 7FC-AUFA3N05-480AE20F2-000091677 | |
| Model code | IC7-60FA3N05-480AE20F2+AGCX+AJFX+BAMT+BDBA+BEF1+BF20+DAAU | |
| Product type | Frequency converter / variable frequency drive | |
| Cooling method | Air-cooled | |
| Input voltage | 380–500 V AC | |
| Input phases | 3-phase | |
| Rated current | 480 A | |
| Protection rating | IP20 / Open Type | |
| Frame size | FA10 | |
| EMC category | C2 | |
| Control panel | 2.8 OPX20 | |
| Standard I/O | 4 × DI, 2 × DI/O, 2 × AI, 1 × AO, 2 × RO | |
| Fieldbus protocol | Modbus TCP | |
| Other communication | Ethernet port | |
| Functional safety | Safe Torque Off (STO) |
Frequently Asked Questions
What is the Danfoss 137N3520 used for?
The Danfoss 137N3520 is used to control the speed and torque of three-phase AC motors in industrial automation, process control and high-power machinery applications.
What supply voltage does the Danfoss 137N3520 require?
The drive operates from a three-phase 380–500 V AC supply.
What current rating does this frequency converter provide?
The Danfoss 137N3520 has a rated current of 480 A.
Does the Danfoss 137N3520 include safety functionality?
Yes, it includes integrated Safe Torque Off (STO) functionality for safety-related motor stopping applications.
What communication options are available?
The drive supports Modbus TCP and includes an Ethernet port for automation system integration.
Trusted by Industrial Automation Professionals
Danfoss iC7-Automation frequency converters are trusted by engineers, machine builders and system integrators for efficient motor control, advanced safety functionality and reliable operation in demanding industrial environments.
