Danfoss 137L3905 iC7 Automation air-cooled frequency converter with 38 A output current, three-phase 380-500 V AC supply, IP20/Open Type protection and Modbus TCP connectivity for industrial motor control.
£3,232.80
The Danfoss 137L3905 is a compact and reliable iC7 Automation frequency converter designed for demanding industrial motor control and automation applications. As part of the advanced Danfoss iC7 Automation series, it delivers precise speed control, dependable shaft performance and flexible integration for modern low-voltage drive systems.
This air-cooled frequency converter is engineered for industrial environments where efficient motor control, robust communication and integrated safety functionality are required. The 137L3905 configuration is associated with the IC7-60FA3N05-38A0E20F3 model code and provides a practical solution for machine builders, system integrators and industrial operators.
With a three-phase 380–500 V AC supply, 38 A rated current, IP20/Open Type protection and FA05a frame size, the Danfoss 137L3905 is well suited to installation in drive cabinets, industrial control panels and engineered automation systems.
Frequency converters such as the Danfoss 137L3905 control motor speed by adjusting output voltage and frequency. This helps improve process accuracy, reduce mechanical stress and optimise energy consumption across motor-driven industrial equipment.
The iC7 Automation platform is designed for configurable drive systems with strong shaft performance, embedded industrial IoT security and flexible automation connectivity. With Modbus TCP communication, integrated Safe Torque Off and compact air-cooled construction, the 137L3905 is a reliable choice for modern industrial control systems.
| Power | 18.5 kW |
|---|---|
| Current | 38 A |
| Phase | Three Phase |
| IP Rating | IP20 |
| Series | iC7 Automation |
| Product code | 137L3905 |
| Catalogue number | 7FC-AUFA3N05-38A0E20F3-000098365 |
| Model / configuration | IC7-60FA3N05-38A0E20F3+ACBC+ALDC+BAMT+BDBA+BEF1+BF20+DAAU |
| Product type | Frequency converter |
| Cooling type | Air-cooled |
| Input voltage | 380–500 V AC |
| Input phases | 3-phase |
| Rated current | 38 A |
| Protection rating | IP20 / Open Type |
| Frame size | FA05a |
| EMC category | C3 |
| Control panel | OPX20 2.8 |
| Standard I/O | 4 × DI, 2 × DI/O, 2 × AI, 1 × AO, 2 × RO |
| Fieldbus protocol | Modbus TCP OS7MT |
| Other protocols | Ethernet port, no protocol |
| Functional safety | STO, not upgradable |
| EMC Filter | Industrial |
The Danfoss 137L3905 is an iC7 Automation frequency converter designed for industrial motor control and automation applications.
This frequency converter is rated at approximately 38 A.
The Danfoss 137L3905 operates from a three-phase 380–500 V AC supply.
This configuration includes Modbus TCP OS7MT fieldbus protocol support, with an Ethernet port also available.
Yes, it includes Safe Torque Off (STO) functional safety, specified as not upgradable for this configuration.
Danfoss iC7 Automation frequency converters are used by automation professionals, machine builders and system integrators to deliver precise motor control, reliable communication and efficient operation in demanding industrial applications.
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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...