Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
137H9921 Danfoss 55kW Three Phase iC7-Automation Variable Speed Drive
Danfoss 137H9921 iC7-Automation frequency converter, an air-cooled three-phase 380-500 V AC variable frequency drive with 106 A output current, EtherNet/IP communication and integrated Safe Torque Off functionality.
£7,479.75
Why Choose the Danfoss 137H9921 iC7-Automation Frequency Converter?
The Danfoss 137H9921 is a high-performance iC7-Automation frequency converter designed for precise motor speed and torque control in demanding industrial automation applications. As part of the advanced Danfoss iC7 drive series, this air-cooled variable frequency drive provides dependable control of three-phase AC motors while supporting efficient integration into modern machine and process control systems.
This drive is engineered for industrial environments where reliable performance, flexible Ethernet-based communication and integrated safety are essential. With standard I/O, EtherNet/IP fieldbus communication and built-in Safe Torque Off functionality, the Danfoss 137H9921 helps simplify automation system design while improving motor control, energy efficiency and operational reliability.
With a rated output current of 106 A and a three-phase 380–500 V AC supply, the 137H9921 is suitable for high-power industrial motor-driven applications including conveyors, pumps, fans, compressors and production machinery. Its IP20/Open Type enclosure and FA07 frame make it ideal for installation inside electrical cabinets and control panels.
Key Advantages
- Advanced Danfoss iC7-Automation frequency converter for industrial applications.
- 106 A rated output current suitable for high-power motor control duties.
- Three-phase 380–500 V AC input for industrial power systems.
- Integrated Safe Torque Off (STO) safety function.
- EtherNet/IP OS7IP fieldbus protocol for automation network integration.
- Robust FA07 frame for demanding cabinet-mounted installations.
Key Features
- Danfoss iC7-Automation drive series.
- Air-cooled frequency converter.
- 106 A rated output current.
- Three-phase 380–500 V AC supply.
- IP20/Open Type protection rating.
- FA07 frame size.
- EMC category C3.
- Blind Panel OPX00.
- Standard I/O including digital inputs, analogue inputs, analogue output and relay outputs.
- EtherNet/IP OS7IP fieldbus protocol enabled.
- Ethernet port included with no additional protocol enabled.
- Integrated Safe Torque Off (STO), not upgradable.
Reliable Motor Control for Industrial Automation
Frequency converters such as the Danfoss 137H9921 regulate motor speed by adjusting output voltage and frequency. This enables industrial machinery to run more efficiently while improving process control, reducing mechanical stress and supporting smoother acceleration and deceleration.
The Danfoss iC7-Automation platform is designed for demanding automation environments where communication, safety and performance are critical. With EtherNet/IP connectivity, flexible I/O and integrated STO functionality, this drive supports efficient integration into modern industrial control architectures.
Typical Applications
- Industrial conveyors and material handling systems.
- Pumps, fans and ventilation equipment.
- Compressors and process machinery.
- Packaging and production equipment.
- Manufacturing automation systems.
- Machine cabinets and control panel installations.
Technical Specifications
Tick the specs you need, then view products that match.
| Power | 55 kW | |
|---|---|---|
| Current | 106 A | |
| Phase | Three Phase | |
| IP Rating | IP20 | |
| EMC Filter | Industrial | |
| Series | iC7-Automation | |
| Catalogue number | 7FC-AUFA3N05-106AE20F3-000117139 | |
| Model code | IC7-60FA3N05-106AE20F3+ACBC+BAIP+BDBA+BEF1+DAAU | |
| Product type | Frequency converter / variable frequency drive | |
| Cooling method | Air-cooled | |
| Rated output current | 106 A | |
| Input voltage | 380–500 V AC | |
| Input phases | 3-phase | |
| Protection rating | IP20/Open Type | |
| Frame size | FA07 | |
| EMC category | C3 | |
| Operator panel | Blind Panel OPX00 | |
| Standard I/O | 4xDI, 2xDI/O, 2xAI, 1xAO, 2xRO | |
| Fieldbus protocol | EtherNet/IP OS7IP | |
| Other protocols | Ethernet port, no protocol | |
| Functional safety | STO, not upgradable |
Frequently Asked Questions
What is the Danfoss 137H9921 used for?
The Danfoss 137H9921 is used to control the speed and torque of three-phase AC motors in industrial automation, machinery and process control applications.
What supply voltage does the drive require?
The drive operates from a three-phase 380–500 V AC supply.
What is the rated output current of the Danfoss 137H9921?
The Danfoss 137H9921 has a rated output current of 106 A.
Which fieldbus protocol is enabled?
The drive includes EtherNet/IP OS7IP fieldbus protocol support for industrial automation network integration.
Does the Danfoss 137H9921 include functional safety?
Yes, it includes integrated Safe Torque Off (STO) functionality, which is not upgradable.
Trusted by Industrial Automation Engineers
Danfoss iC7-Automation frequency converters are used by engineers, machine builders and industrial operators to deliver reliable motor control, efficient operation and flexible integration into modern automation systems.
