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137L3320 Danfoss 400kW Three Phase iC7-Automation Variable Speed Drive
Danfoss 137L3320 iC7-Automation frequency converter, an air-cooled industrial drive with 736 A current rating, three-phase 380-500 V AC input, IP20/Open Type enclosure, EtherNet/IP connectivity and Safe Torque Off functionality.
£31,308.75
Why Choose the Danfoss 137L3320 iC7-Automation Frequency Converter?
The Danfoss 137L3320 is a high-power iC7-Automation frequency converter designed for demanding industrial motor control and automation applications. Engineered for precision speed and torque regulation, this drive helps optimise motor performance, improve process control and support reliable operation in heavy-duty industrial systems.
As part of the advanced Danfoss iC7-Automation series, the 137L3320 combines robust construction with flexible connectivity, integrated safety and scalable control functionality. It is ideal for machine builders, system integrators and industrial operators who require dependable drive performance across complex automation environments.
With a three-phase 380–500 V AC supply, 736 A current rating and IP20/Open Type enclosure, the Danfoss 137L3320 is suitable for large industrial motors used in pumps, compressors, conveyors, fans and process machinery. Its air-cooled design, standard I/O and EtherNet/IP communication make it a strong choice for modern control panel installations.
Key Advantages
- High-power industrial frequency converter for demanding automation applications.
- 736 A current rating suitable for large motor control systems.
- Three-phase 380–500 V AC input compatible with industrial power networks.
- Integrated Safe Torque Off (STO) safety function.
- Built-in EtherNet/IP communication for industrial automation integration.
- Standard I/O for flexible control and monitoring.
- Air-cooled construction for reliable thermal management.
- IP20/Open Type enclosure for cabinet and panel installations.
Key Features
- Danfoss iC7-Automation frequency converter series.
- 736 A current rating.
- Three-phase 380–500 V AC input supply.
- IP20/Open Type enclosure.
- Frame size FA11.
- EMC category C3.
- Integrated Safe Torque Off (STO) functionality.
- EtherNet/IP OS7IP fieldbus protocol enabled.
- Ethernet port with no protocol enabled.
- Control Panel 2.8 OPX20 operator interface.
- Standard I/O: 4xDI, 2xDI/O, 2xAI, 1xAO and 2xRO.
- Air-cooled construction for industrial environments.
Reliable High-Power Motor Control
Frequency converters such as the Danfoss 137L3320 regulate motor speed by adjusting output frequency and voltage. This enables industrial machinery to operate more efficiently while improving process precision and reducing mechanical stress on motors, pumps, fans and connected drive components.
The iC7-Automation platform is designed for demanding industrial environments where connectivity, safety and performance are essential. With EtherNet/IP communication, standard I/O and integrated STO functionality, the 137L3320 can be incorporated into advanced automation networks and control systems.
Typical Applications
- Large industrial pumps and compressor systems.
- Heavy-duty conveyors and material handling equipment.
- Fans, blowers and ventilation systems.
- Process manufacturing machinery.
- Water and wastewater treatment installations.
- Industrial production lines.
- OEM machinery and automation panels.
- High-power three-phase motor control systems.
Technical Specifications
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| Power | 400 kW | |
|---|---|---|
| Current | 736 A | |
| Phase | Three Phase | |
| IP Rating | IP20 | |
| EMC Filter | Industrial | |
| Series | iC7-Automation | |
| Type code | 7FC-AUFA3N05-736AE20F3-000121435 | |
| Product type | Frequency converter | |
| Cooling method | Air-cooled | |
| Current rating | 736 A | |
| Input voltage | 380–500 V AC | |
| Input phases | 3-phase | |
| Frequency | 50 / 60 Hz | |
| Protection rating | IP20 / Open Type | |
| Frame size | FA11 | |
| EMC category | C3 | |
| Standard I/O | 4xDI, 2xDI/O, 2xAI, 1xAO, 2xRO | |
| Functional safety | Safe Torque Off (STO), not upgradable | |
| Control panel | Control Panel 2.8 OPX20 |
Frequently Asked Questions
What is the Danfoss 137L3320 used for?
The Danfoss 137L3320 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 supply voltage does this frequency converter require?
The drive operates from a three-phase 380–500 V AC supply.
What current rating does the Danfoss 137L3320 provide?
The Danfoss 137L3320 has a current rating of 736 A.
Does the drive include safety functionality?
Yes. The drive includes integrated Safe Torque Off (STO) functionality for safer machine operation.
Which communication protocol is enabled?
The 137L3320 includes EtherNet/IP OS7IP fieldbus communication and an Ethernet port for industrial network connectivity.
Trusted by Industrial Automation Professionals
Danfoss iC7-Automation frequency converters are trusted by engineers and system integrators for precise motor control, flexible connectivity and reliable performance in demanding industrial environments.
