Danfoss 137U3947 iC7-Automation air-cooled frequency converter with 658 A rated current, three-phase 380-500 V AC input, IP20 / Open Type enclosure and PROFINET RT connectivity.
£26,987.20
The Danfoss 137U3947 is a high-performance iC7-Automation frequency converter designed for precise speed and torque control of three-phase AC motors in demanding industrial automation applications. As part of the advanced Danfoss iC7-Automation drive series, it delivers dependable motor control, flexible communication and efficient operation for modern machinery, process systems and engineered control panels.
This air-cooled frequency converter is supplied in an IP20 / Open Type enclosure format, making it suitable for installation inside electrical control panels and automation cabinets. Its robust FA11 frame, integrated control panel and standard I/O configuration make it a practical choice for OEMs, panel builders and industrial system integrators.
With a rated current of 658 A and a three-phase 380–500 V AC supply, the Danfoss 137U3947 is ideal for high-power industrial motor control applications requiring reliable performance, accurate process control and seamless network integration.
Frequency converters such as the Danfoss 137U3947 regulate motor speed by adjusting output voltage and frequency. This helps industrial machinery run more efficiently while improving process accuracy, reducing mechanical stress and supporting smoother motor operation.
The iC7-Automation range is designed for demanding automation systems where dependable motor control, flexible connectivity and robust performance are essential. With integrated I/O, Ethernet connectivity and PROFINET RT support, this drive can be integrated into PLC-based automation networks and modern industrial control platforms.
| Power | 355 kW |
|---|---|
| Current | 658 A |
| Phase | Three Phase |
| IP Rating | IP20 |
| Series | iC7-Automation |
| SKU | 137U3947 |
| Product type | AC frequency converter |
| Cooling method | Air-cooled |
| Rated current | 658 A |
| Input voltage | 380–500 V AC |
| Input phases | 3-phase |
| Protection rating | IP20 / Open Type |
| Frame size | FA11 |
| EMC category | C3 |
| Control panel | Control Panel 2.8 OPX20 |
| Standard I/O | 4 × DI, 2 × DI/O, 2 × AI, 1 × AO, 2 × RO |
| Fieldbus protocol | PROFINET RT OS7PR |
| Other protocol option | Ethernet port, no protocol |
| Functional safety | STO, not upgradable |
| EMC Filter | Industrial |
The Danfoss 137U3947 is used to control the speed and torque of three-phase AC motors in industrial automation, machinery and process control applications.
This product belongs to the Danfoss iC7-Automation frequency converter series.
The drive is designed for a three-phase 380–500 V AC supply.
The Danfoss 137U3947 has a rated current of 658 A.
The drive includes PROFINET RT OS7PR fieldbus communication for integration with compatible industrial automation networks.
Danfoss iC7-Automation frequency converters are trusted by engineers, panel builders and system integrators for reliable motor control, flexible communication and efficient operation in demanding industrial environments.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...