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137U3861 Danfoss 630kW Three Phase iC7-Automation Variable Speed Drive
Danfoss 137U3861 iC7-Automation frequency converter, an air-cooled three-phase AC drive with 1120 A rated current, 380-500 V AC input, IP54 / UL Type 12 enclosure and Modbus TCP connectivity.
£69,180.75
Why Choose the Danfoss 137U3861 iC7-Automation Frequency Converter?
The Danfoss 137U3861 is a high-performance iC7-Automation frequency converter designed for demanding industrial motor control applications. As part of the advanced Danfoss iC7-Automation drive series, it provides reliable speed and torque control for large three-phase AC motors in automation, process and heavy-duty machinery environments.
This air-cooled frequency converter combines robust power handling with flexible automation connectivity. It is configured with an IP54 / UL Type 12 enclosure, making it suitable for industrial installations where enhanced protection against dust and splashing water is required. The drive also includes integrated safety and communication options to support modern control architectures.
With a three-phase 380–500 V AC supply and a rated current of 1120 A, the Danfoss 137U3861 is suitable for high-power motor applications requiring dependable performance, efficient energy use and precise process control.
Key Advantages
- High-power Danfoss iC7-Automation frequency converter for industrial motor control.
- 1120 A rated current for demanding drive applications.
- Three-phase 380–500 V AC input suitable for industrial power systems.
- IP54 / UL Type 12 enclosure for protected installation environments.
- Integrated Safe Torque Off (STO) functional safety capability.
- Built-in communication options including Modbus TCP.
Key Features
- Danfoss iC7-Automation drive series.
- Air-cooled frequency converter.
- 1120 A rated output current.
- Three-phase 380–500 V AC input supply.
- Frame size FB12.
- IP54 / UL Type 12 protection rating.
- EMC category C2.
- Control Panel 2.8 OPX20 included.
- Standard I/O with digital inputs, analogue inputs, analogue output and relay outputs.
- Functional Safety: STO, not upgradable.
Reliable Motor Control for Demanding Automation Systems
Frequency converters such as the Danfoss 137U3861 regulate motor speed by controlling output voltage and frequency. This allows industrial motors to run more efficiently, reducing energy consumption while improving process control and mechanical performance.
The iC7-Automation range is designed for demanding industrial environments where precise motor control, flexible connectivity and high system reliability are essential. Its communication interfaces, standard I/O and integrated safety functionality make it suitable for integration into complex automation systems.
Typical Applications
- Heavy-duty industrial motor control systems.
- Pumps, fans and compressors.
- Process automation and manufacturing machinery.
- Conveyors and material handling systems.
- Water and wastewater treatment equipment.
- Industrial HVAC and ventilation systems.
- Large automation systems requiring high-current drive control.
Technical Specifications
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| Power | 630 kW | |
|---|---|---|
| Current | 1120 A | |
| Phase | Three Phase | |
| IP Rating | IP54 | |
| EMC Filter | Commercial | |
| Series | iC7-Automation | |
| SKU | 137U3861 | |
| Product type | AC frequency converter | |
| Cooling method | Air-cooled | |
| Rated current | 1120 A | |
| Input voltage | 380–500 V AC | |
| Input phases | 3-phase | |
| Protection rating | IP54 / UL Type 12 | |
| Frame size | FB12 | |
| EMC category | C2 | |
| Control panel | Control Panel 2.8 OPX20 | |
| Standard I/O | 4 × DI, 2 × DI/O, 2 × AI, 1 × AO, 2 × RO | |
| Fieldbus protocol | Modbus TCP OS7MT | |
| Other protocol option | Ethernet port, no protocol | |
| Functional safety | STO, not upgradable |
Frequently Asked Questions
What is the Danfoss 137U3861 used for?
The Danfoss 137U3861 is used to control the speed and torque of large three-phase AC motors in industrial automation, process control and heavy-duty machinery applications.
What drive series does the Danfoss 137U3861 belong to?
This product belongs to the Danfoss iC7-Automation frequency converter series.
What supply voltage does the Danfoss 137U3861 require?
The drive is designed for a three-phase 380–500 V AC supply.
What is the rated current of this frequency converter?
The Danfoss 137U3861 has a rated current of 1120 A.
Does the Danfoss 137U3861 include functional safety?
Yes, the drive includes Safe Torque Off (STO) functional safety, specified as not upgradable.
Trusted by Industrial Automation Engineers
Danfoss iC7-Automation frequency converters are trusted by engineers and system integrators for reliable high-power motor control, flexible connectivity and efficient operation in demanding industrial environments.
