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137L3905 Danfoss 18.5kW Three Phase iC7-Automation Variable Speed Drive
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.
£3,030.75
Why Choose the Danfoss 137L3905 iC7 Automation Frequency Converter?
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.
Key Advantages
- Compact Danfoss iC7 Automation frequency converter for industrial motor control.
- 38 A rated current for low-voltage drive applications.
- Three-phase 380–500 V AC input for industrial power systems.
- Air-cooled design for efficient thermal management.
- Integrated Safe Torque Off (STO) functional safety.
- Modbus TCP fieldbus support for automation network integration.
Key Features
- Danfoss iC7 Automation series.
- Product code 137L3905.
- IC7-60FA3N05-38A0E20F3 frequency converter configuration.
- 38 A output current.
- 3-phase 380–500 V AC supply.
- IP20/Open Type protection rating.
- FA05a frame size.
- EMC category C3.
- OPX20 2.8 control panel.
- Standard I/O with digital, analogue and relay outputs.
- Modbus TCP OS7MT fieldbus protocol enabled.
- Integrated STO safety function.
Efficient Motor Control for Industrial Automation
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.
Typical Applications
- Industrial motor control systems.
- Machine building and OEM automation equipment.
- Manufacturing and production line automation.
- Pumps, fans and compressor installations.
- Material handling and conveyor systems.
- Drive cabinets and engineered automation panels.
Technical Specifications
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| Power | 18.5 kW | |
|---|---|---|
| Current | 38 A | |
| Phase | Three Phase | |
| IP Rating | IP20 | |
| EMC Filter | Industrial | |
| 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 |
Frequently Asked Questions
What is the Danfoss 137L3905?
The Danfoss 137L3905 is an iC7 Automation frequency converter designed for industrial motor control and automation applications.
What current rating does the Danfoss 137L3905 provide?
This frequency converter is rated at approximately 38 A.
What supply voltage does the 137L3905 require?
The Danfoss 137L3905 operates from a three-phase 380–500 V AC supply.
What communication protocol is enabled?
This configuration includes Modbus TCP OS7MT fieldbus protocol support, with an Ethernet port also available.
Does the Danfoss 137L3905 include functional safety?
Yes, it includes Safe Torque Off (STO) functional safety, specified as not upgradable for this configuration.
Trusted by Industrial Drive Engineers Worldwide
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.
