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137N1856 Danfoss 18.5kW Three Phase iC7-Automation Variable Speed Drive
Danfoss 137N1856 iC7 Automation frequency converter with three-phase 380-500 V AC input, 38 A rated current, 18.5 kW power rating, IP20 open type enclosure, Modbus TCP communication and integrated Safe Torque Off functionality.
£3,198.75
Why Choose the Danfoss 137N1856 iC7 Automation Frequency Converter?
The Danfoss 137N1856 is a powerful iC7 Automation frequency converter designed for precise and efficient control of three-phase AC motors in demanding industrial automation applications. As part of the advanced Danfoss iC7 Automation drive series, it provides reliable motor control, flexible connectivity and robust performance for machine builders, OEMs and industrial users.
This frequency converter combines accurate speed and torque control with modern communication functionality, helping improve process stability, machine productivity and energy efficiency. The iC7 Automation platform is engineered for integration into PLC-based systems, industrial networks and control cabinets where safety, performance and reliability are essential.
With a three-phase 380–500 V AC supply, 38 A current rating and 18.5 kW power rating, the Danfoss 137N1856 is suitable for larger industrial motors used in conveyors, pumps, fans, compressors, processing machinery and production equipment. Its IP20 open type construction and FA05b frame size make it ideal for cabinet and panel-mounted installations.
Key Advantages
- Advanced iC7 Automation frequency converter for industrial motor control.
- 18.5 kW / 25 hp power rating for demanding automation applications.
- 38 A rated current for reliable motor operation.
- Three-phase 380–500 V AC input suitable for industrial power systems.
- Integrated Safe Torque Off (STO) safety function.
- Modbus TCP fieldbus communication for automation network integration.
- Built-in Ethernet port for flexible connectivity.
- IP20 open type enclosure for cabinet and panel mounting.
Key Features
- Danfoss iC7 Automation series.
- 18.5 kW / 25 hp power rating.
- 38 A rated output current.
- Three-phase 380–500 V AC input supply.
- IP20 open type enclosure.
- FA05b frame size.
- EMC category C3.
- Integrated Safe Torque Off (STO) functionality.
- Modbus TCP OS7MT fieldbus protocol enabled.
- Ethernet port with no additional protocol enabled.
- Standard I/O with digital, analogue and relay connections.
- Control Panel 2.8 OPX20 included.
- Air-cooled frequency converter design.
Reliable Motor Control for Industrial Automation
Frequency converters such as the Danfoss 137N1856 regulate motor speed by adjusting the voltage and frequency supplied to the motor. This enables smoother acceleration and deceleration, improved process control, reduced mechanical stress and lower energy consumption across industrial machinery.
The Danfoss iC7 Automation platform is designed for modern automation systems where reliability, safety and connectivity are essential. With integrated STO, flexible I/O and Ethernet-based communication, the 137N1856 provides a robust motor control solution for demanding production environments and machine control panels.
Typical Applications
- Industrial conveyors and material handling systems.
- Packaging and production machinery.
- Pumps, fans and ventilation equipment.
- Compressors and process systems.
- Manufacturing and assembly lines.
- OEM automation systems and machine building.
- Industrial control cabinets and 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 | |
| Catalogue number | 7FC-AUFA3N05-38A0E20F3-000131296 | |
| Product type | Frequency converter | |
| Cooling method | Air cooled | |
| Input voltage | 380–500 V AC | |
| Input phases | 3-phase | |
| Power rating | 18.5 kW / 25 hp | |
| Rated current | 38 A | |
| Protection rating | IP20 / Open Type | |
| Frame size | FA05b | |
| EMC category | C3 | |
| Control panel | Control Panel 2.8 OPX20 | |
| Standard I/O | 4x DI, 2x DI/O, 2x AI, 1x AO, 2x RO | |
| Fieldbus protocol | Modbus TCP OS7MT | |
| Other protocol support | Ethernet port, no protocol | |
| Functional safety | Safe Torque Off (STO), not upgradable | |
| Mounting type | Cabinet / panel mounting |
Frequently Asked Questions
What is the Danfoss 137N1856 used for?
The Danfoss 137N1856 is used to control the speed and torque of three-phase AC motors in industrial automation, machine building and production applications.
What supply voltage does this drive require?
The drive operates from a three-phase 380–500 V AC supply.
What is the rated current of the Danfoss 137N1856?
The Danfoss 137N1856 has a rated current of 38 A.
What is the power rating of this frequency converter?
This model has a power rating of 18.5 kW / 25 hp.
Which communication protocol is enabled?
The drive has Modbus TCP OS7MT fieldbus protocol enabled and includes an Ethernet port.
Trusted by Industrial Automation Professionals
Danfoss iC7 Automation frequency converters are widely used by automation engineers, machine builders and maintenance teams to deliver reliable motor control, efficient operation and seamless integration into modern industrial systems.
