Danfoss 137U8661 iC7-Automation frequency converter with 1260 A current rating, 380-500 V AC three phase input, Modbus TCP communication and integrated STO safety for high-power industrial motor control.
£80,663.20
The Danfoss 137U8661 is a high-power iC7-Automation frequency converter designed for demanding industrial motor control applications where reliability, scalability and precise speed regulation are essential. As part of the advanced Danfoss iC7-Automation series, it supports modern automation systems with powerful drive performance, flexible connectivity and integrated safety functionality.
This air-cooled frequency converter is engineered for integration into industrial machinery, process systems and large-scale drive installations. Its robust IP54 / UL Type 12 enclosure rating provides enhanced protection for challenging environments, while the modular iC7 platform enables efficient configuration and dependable long-term operation.
With a three-phase 380–500 V AC supply and a substantial 1260 A current rating, the Danfoss 137U8661 is suitable for large motors and heavy-duty industrial processes. It includes Modbus TCP fieldbus communication, Ethernet connectivity, standard I/O and integrated Safe Torque Off (STO) functionality for safer motor control.
Frequency converters such as the Danfoss 137U8661 regulate motor speed by adjusting the voltage and frequency supplied to the motor. This helps improve process control, optimise energy usage and reduce mechanical stress across industrial drive systems.
The iC7-Automation platform is designed for flexible integration into modern control architectures. With high current capacity, industrial communication, standard I/O and integrated safety functionality, the 137U8661 supports dependable operation in demanding high-power applications.
| Power | 710 kW |
|---|---|
| Current | 1260 A |
| Phase | Three Phase |
| IP Rating | IP54 |
| Series | iC7-Automation |
| Part Number | 137U8661 |
| Model Code | IC7-60FA3N05-1260E54F3+AGCX+AJFD+AMMX+BAMT+BDBA+BEF1+BF20+CAC0+DAAU |
| Product type | AC frequency converter |
| Input voltage | 380–500 V AC |
| Input phases | Three-phase |
| Current rating | 1260 A |
| Cooling method | Air cooled |
| Protection rating | IP54 / UL Type 12 |
| Frame size | FB12 |
| EMC category | C3 |
| Fieldbus protocol | Modbus TCP OS7MT |
| Other connectivity | Ethernet port, no protocol |
| Functional safety | STO, not upgradable |
| Control panel | Control Panel 2.8 OPX20 |
| Standard I/O | 4xDI, 2xDI/O, 2xAI, 1xAO, 2xRO |
| EMC Filter | Industrial |
The Danfoss 137U8661 is used to control large three-phase AC motors in industrial automation, process control and high-power machinery applications.
The unit operates from a three-phase 380–500 V AC supply.
The frequency converter has a 1260 A current rating.
This model includes Modbus TCP OS7MT fieldbus communication and an Ethernet port for automation system integration.
The Danfoss 137U8661 includes integrated Safe Torque Off (STO) functional safety.
Danfoss iC7-Automation frequency converters are trusted by industrial engineers, system integrators and machine builders for powerful motor control, reliable communication and efficient operation in demanding automation 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...