Danfoss 137N3933 iC7-Automation frequency converter, an air-cooled 799 A three phase variable frequency drive with 380-500 V AC input, Modbus TCP communication, STO safety and IP54 / UL Type 12 protection.
£43,938.40
The Danfoss 137N3933 is a high-capacity iC7-Automation frequency converter designed for demanding industrial automation and motor control applications. As part of the advanced Danfoss iC7-Automation drive series, it provides precise speed control, reliable torque performance and flexible integration into modern industrial control systems.
This air-cooled drive is engineered for powerful motor-driven equipment where dependable operation, communication flexibility and functional safety are essential. With its protected enclosure, integrated control interfaces and industrial Ethernet capability, the Danfoss 137N3933 is suitable for heavy-duty machinery, process equipment and large-scale factory automation installations.
The Danfoss 137N3933 features a three-phase 380-500 V AC supply, 799 A output current, IP54 / UL Type 12 enclosure protection and Modbus TCP fieldbus communication. Its robust construction and integrated Safe Torque Off (STO) functionality make it ideal for demanding industrial environments requiring reliable high-power motor control.
Frequency converters such as the Danfoss 137N3933 regulate AC motor speed by adjusting the voltage and frequency supplied to the motor. This enables improved process control, reduced mechanical stress and more efficient operation across high-power industrial applications.
The iC7-Automation platform is designed for demanding automation environments where connectivity, safety and performance are critical. With Modbus TCP communication, Ethernet support and integrated STO safety, this drive can be integrated into PLC-based systems, production lines and heavy-duty process installations.
| Power | 450 kW |
|---|---|
| Current | 799 A |
| Phase | Three Phase |
| IP Rating | IP54 |
| Series | iC7-Automation |
| Part number | 137N3933 |
| Catalog number | 7FC-AUFA3N05-799AE54F3-000133469 |
| Product type | Frequency converter / Variable frequency drive |
| Model code | IC7-60FA3N05-799AE54F3 |
| Input voltage | 380-500 V AC |
| Input phases | 3-phase |
| Output current | 799 A |
| Cooling method | Air-cooled |
| Protection rating | IP54 / UL Type 12 |
| Frame size | FB11 |
| EMC category | C3 |
| Control panel | Control Panel 2.8 OPX20 |
| Fieldbus protocol | Modbus TCP OS7MT |
| Other protocol support | Ethernet port, no protocol |
| Standard I/O | 4x DI, 2x DI/O, 2x AI, 1x AO, 2x RO |
| Functional safety | STO, not upgradable |
| EMC Filter | Industrial |
The Danfoss 137N3933 is used to control the speed and torque of AC motors in demanding industrial automation, machinery and process control applications.
The drive provides a rated output current of 799 A, making it suitable for high-capacity industrial motor control applications.
The 137N3933 operates from a three-phase 380-500 V AC supply.
The drive includes Modbus TCP OS7MT fieldbus communication and Ethernet port support for industrial network integration.
Yes, the Danfoss 137N3933 includes integrated Safe Torque Off (STO) functional safety.
Danfoss iC7-Automation frequency converters are trusted by engineers, system integrators and industrial operators for reliable high-power motor control, advanced connectivity and dependable performance 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...