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137U4251 Danfoss 75kW Three Phase iC7-Automation Variable Speed Drive
MPN: 137U4251
Alt. SKU: IC7-60FA3N05-147AE21F1+ACBC+ALDC+BAPR+BDBA+BEF2+BF20+DAAU
Special Price
£13,532.16
£11,276.80
Regular Price
£16,915.20
Why Choose the Danfoss 137U4251 iC7-Automation Frequency Converter?
The Danfoss 137U4251 is a high-performance iC7-Automation frequency converter designed for precise control of three-phase AC motors in demanding industrial automation and machinery applications. As part of the advanced Danfoss iC7-Automation drive platform, it delivers efficient speed regulation, dependable operation and flexible integration into modern control systems.
This air-cooled variable speed drive is engineered for protected industrial installations where reliable motor control, functional safety and automation network connectivity are required. Its IP21 / UL Type 1 enclosure provides added protection for electrical cabinet and plant room installations, while its integrated I/O and communication options support straightforward system integration.
With a rated motor power of 75 kW, a rated output current of 147 A and a three-phase 380-500 V AC supply, the Danfoss 137U4251 is ideal for pumps, fans, conveyors, compressors, production machinery and OEM automation systems.
Key Advantages
- Powerful industrial frequency converter for automation and machinery applications.
- 75 kW motor power rating suitable for demanding industrial drive systems.
- 147 A rated output current for precise three-phase motor control.
- Three-phase 380-500 V AC input compatible with industrial power supplies.
- IP21 / UL Type 1 enclosure for protected industrial installation.
- Integrated Safe Torque Off (STO) and SS1-t safety functionality.
- PROFINET RT fieldbus support for automation network integration.
- Air-cooled construction for reliable thermal performance.
Key Features
- Danfoss iC7-Automation series.
- 75 kW typical motor power rating.
- 147 A rated output current.
- Three-phase 380-500 V AC input supply.
- Air-cooled frequency converter construction.
- IP21 / UL Type 1 protection rating.
- Frame size FK083.
- EMC category C1 and C2.
- PROFINET RT OS7PR fieldbus protocol enabled.
- Integrated Ethernet port.
- Integrated STO and SS1-t functional safety.
- Control Panel 2.8 OPX20 interface.
Technical Specifications
- Manufacturer: Danfoss
- Series: iC7-Automation
- Part number: 137U4251
- Catalogue number: 7FC-AUFA3N05-147AE21F1-000145306
- Model code: IC7-60FA3N05-147AE21F1+ACBC+ALDC+BAPR+BDBA+BEF2+BF20+DAAU
- Product type: Frequency converter / variable speed drive
- Typical motor power: 75 kW
- Rated output current: 147 A
- Input voltage: 380-500 V AC
- Input phases: 3-phase
- Cooling method: Air cooled
- Protection rating: IP21 / UL Type 1
- Frame size: FK083
- EMC category: C1 and C2
- Communication protocol: PROFINET RT OS7PR
- Other communication: Ethernet port
- Standard I/O: 4×DI, 2×DI/O, 2×AI, 1×AO, 2×RO
- Functional safety: STO, SS1-t, fieldbus
- Control panel: OPX20
Reliable Motor Control for Industrial Systems
Frequency converters such as the Danfoss 137U4251 regulate motor speed by adjusting output voltage and frequency. This helps improve process control, reduce energy consumption and minimise mechanical stress on motors, pumps, fans and driven equipment.
The iC7-Automation platform is designed for modern industrial systems where reliable operation, communication flexibility and functional safety are essential. With PROFINET RT communication, integrated Ethernet and STO / SS1-t functionality, this drive is well suited to automated production environments and machine control panels.
Typical Applications
- Industrial conveyors and material handling systems.
- Pumps, fans and ventilation equipment.
- Compressors and process machinery.
- Packaging and production lines.
- Machine building and OEM automation systems.
- Water treatment and utility applications.
- General industrial motor speed control.
Frequently Asked Questions
What is the Danfoss 137U4251 used for?
The Danfoss 137U4251 is used to control the speed and torque of three-phase AC motors in industrial automation, machinery and process control applications.
What motor power does this drive support?
The drive is typically rated for motors up to approximately 75 kW, depending on the application and motor conditions.
What output current does this drive provide?
The drive has a rated output current of approximately 147 A.
What supply voltage does the Danfoss 137U4251 require?
The drive operates from a three-phase 380-500 V AC supply.
Which communication protocol is enabled?
The Danfoss 137U4251 supports PROFINET RT communication and includes an Ethernet port for automation network connectivity.
Trusted for Industrial Automation
Danfoss iC7-Automation drives are trusted by engineers, OEMs and system integrators for reliable motor control, efficient operation and seamless integration into modern automation systems.
| Manufacturer Part Number | 137U4251 |
|---|---|
| Barcode | 5715253726694 |
| Communication | PROFINET RT OS7PR |
| Packed Quantity | 1 |
| Height | 980mm |
| Width | 267mm |
| Depth | 367mm |
| Ambient temp HO (1/10 min) | 45°C/113°F |
| Ambient temp HO2 (1/5 min) | 45°C/113°F |
| Ambient temp LO (1/10 min) | 45°C/113°F |
| Ambient temp. normal overload | 45°C/113°F |
| Amperage | 147A |
| A option | Option slot available for later addtion |
| B option | Option slot not available |
| C Option | Option slot available for later addtion |
| D Option | Option slot available for later addtion |
| E Option | Option slot available for later addtion |
| Cable entry and EMC plate | Standard plate |
| Continous current IH (1/10min) | 147/133A |
| Continous current IL (1/10min) | 147/133A |
| Brake - Safe-Stop | Brake chopper |
| Cable entry plate | Standard plate |
| Continous current IH (1/5min) | 106/96A |
| Coating PCB | Not coated PCB |
| Control Panel | Control Panel 2.8 OPX20 |
| Control Panel Included | Yes |
| Efficiency class-Relative loss | IE2 - 1.56% |
| EMC Screen | Yes |
| Filter | C1 and C2 filter |
| Frame Size | FK08 |
| Functional safety | STO, SS1-t, fieldbus |
| HP Rating | 100 |
| Input curent HO2 (1/5 min) | 103/90A |
| Input current HO (1/10 min) | 140/122A |
| Input current in Normal Overload | 140/122A |
| Input current LO (1/10 min) | 140/122A |
| Input Frequency | 50/60Hz |
| Input Voltage | 3x380-500VAC |
| Interface board | MicroSD card reader and RTC |
| Degree of protection (IP) | IP21 / TYPE 1 |
| KW Rating | 75kW |
| Maximum Power Loss LO [W] | 1682 |
| Onboard I/O | 4xDI,2xDI/O,2xAI,1xAO,2xRO |
| Output Frequency | 590Hz |
| Overload current IH (1/10min) | 221/200A |
| Overload current IH (1/5min) | 159/144A |
| Overload current IL (1/10min) | 162/146A |
| Output Phases | Three phase |
| Short Circuit Release | 100kA |
| VSD Range | Danfoss iC7-Automation |
| Typical motor power PH2 (150%) | 55KW(400V)/75HP(460V) |
| Manufacturer | Danfoss |
| Typical motor power PL (110%) | 75KW(400V)/100HP(460V) |
| Typical motor power PH (150%) | 75KW(400V)/100HP(460V) |
| Alternative Product SKU | IC7-60FA3N05-147AE21F1+ACBC+ALDC+BAPR+BDBA+BEF2+BF20+DAAU |
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