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.
137U4556 Danfoss iC7-Automation 400kW/550 3 phase regenerative AFE
Danfoss 137U4556 VACON NXP air-cooled frequency converter for industrial AC motor control, featuring 525-690 V AC supply, IP21 / NEMA 1 protection, integrated brake chopper and PROFIBUS DP communication.
£76,341.00
Why Choose the Danfoss 137U4556 VACON NXP Frequency Converter?
The Danfoss 137U4556 is a robust VACON NXP frequency converter designed for demanding industrial motor control applications. As part of the proven VACON NXP air-cooled drive series, it provides accurate speed and torque control for three-phase AC motors used in machinery, process control and automation systems.
This drive is engineered for applications requiring reliable performance, flexible configuration and efficient motor operation. The VACON NXP range is widely used across heavy-duty industrial environments where dependable variable speed control, system uptime and automation integration are essential.
With a 525–690 V AC supply range, IP21 / NEMA 1 enclosure format and industrial I/O capability, the Danfoss 137U4556 is suitable for panel and machinery applications where high-voltage motor control is required. Its built-in brake chopper, alphanumeric display and fieldbus-ready platform help simplify commissioning and integration into control systems.
Key Advantages
- Industrial VACON NXP frequency converter for demanding motor control applications.
- 525–690 V AC input suitable for high-voltage industrial systems.
- IP21 / NEMA 1 protection rating for protected indoor installations.
- Integrated brake chopper for dynamic braking applications.
- Flexible I/O configuration for automation and control integration.
- Fieldbus connectivity support for industrial communication networks.
- Air-cooled design for reliable operation in control panels and machinery systems.
Key Features
- Danfoss VACON NXP air-cooled drive series.
- Frequency converter for AC motor speed control.
- 525–690 V AC mains supply.
- 640–1100 V DC bus compatibility.
- IP21 / NEMA 1 enclosure rating.
- Alpha-numeric display for local control and configuration.
- Integrated brake chopper.
- Standard I/O with digital inputs, relay outputs, analogue inputs and analogue output.
- PROFIBUS DP communication option with Sub-D9 connector.
- English manual configuration.
- Designed for industrial automation and process control environments.
Reliable Variable Speed Control for Industrial Systems
Frequency converters such as the Danfoss 137U4556 regulate motor speed by adjusting the voltage and frequency supplied to the motor. This enables smoother operation, improved process control and reduced energy consumption compared with fixed-speed motor systems.
The VACON NXP platform is designed for demanding environments where flexibility, uptime and performance are critical. With configurable I/O, fieldbus support and robust high-voltage capability, the 137U4556 is well suited to industrial automation, process machinery and system integration projects.
Typical Applications
- Industrial pumps and pumping stations.
- Fans, blowers and ventilation systems.
- Conveyors and material handling machinery.
- Compressors and process equipment.
- Industrial production and manufacturing machinery.
- Water and wastewater treatment systems.
- Marine and heavy-duty industrial automation.
- High-voltage motor control retrofit projects.
Technical Specifications
Tick the specs you need, then view products that match.
| Power | 400 kW | |
|---|---|---|
| Current | 730 A | |
| Voltage | 500 V | |
| Phase | Three Phase | |
| IP Rating | IP21 | |
| Series | VACON NXP Air Cooled | |
| Product type | Frequency converter / variable frequency drive | |
| Application | Industrial AC motor control | |
| Input voltage | 525–690 V AC | |
| DC voltage range | 640–1100 V DC | |
| Input phases | 3-phase | |
| Protection rating | IP21 / NEMA 1 | |
| Cooling method | Air cooled | |
| Display | Alpha-numeric display | |
| EMC compliance | IEC 61800-3, second environment | |
| Brake function | Integrated brake chopper | |
| A Slot | 6DI, DO, 2AI, 1AO, +10 Vr, +24 V | |
| B Slot | 2 relay outputs, NO / NC | |
| C Slot | No board | |
| D Slot | No board | |
| E Slot | PROFIBUS DP with Sub-D9 | |
| Frame size | Frame 06 | |
| Manual | English |
Frequently Asked Questions
What is the Danfoss 137U4556 used for?
The Danfoss 137U4556 is used to control the speed and torque of three-phase AC motors in industrial automation, process control and machinery applications.
Is the Danfoss 137U4556 a frequency converter?
Yes, the 137U4556 is a VACON NXP frequency converter designed for variable speed AC motor control.
What supply voltage does the Danfoss 137U4556 require?
The drive is designed for a 525–690 V AC three-phase supply, with a DC voltage range of 640–1100 V DC.
What protection rating does this drive have?
The Danfoss 137U4556 has an IP21 / NEMA 1 protection rating for protected indoor installations.
Does the drive support industrial communication?
Yes, this configuration includes PROFIBUS DP communication with a Sub-D9 connector for integration with industrial automation systems.
Trusted by Industrial Automation Engineers Worldwide
Danfoss VACON NXP drives are trusted by engineers, system integrators and panel builders for reliable variable speed motor control, flexible automation integration and dependable performance in demanding industrial environments.
