Unitronics UMI-0550EU-B7 variable frequency drive featuring 55 kW output power, three-phase 380-480 V AC input, advanced vector control and integrated Safe Torque Off functionality for industrial automation applications.
£2,776.20
The Unitronics UMI-0550EU-B7 is a high-performance AC variable frequency drive (VFD) engineered for precise speed, torque and position control of three-phase motors in demanding industrial applications. As part of the advanced Unitronics UMI-B7 series, it combines powerful motor control, integrated safety features and flexible communication capabilities to support modern automation systems.
Featuring advanced control methods including sensorless vector control (SVC), closed-loop vector control and SVPWM motor control, the UMI-0550EU-B7 delivers accurate performance, improved process control and enhanced energy efficiency. The drive supports Ethernet expansion and integration with PLC and HMI platforms, making it suitable for both standalone machinery and networked automation environments.
With a rated output power of 55 kW (75 HP) and a three-phase 380–480 V AC supply, the UMI-0550EU-B7 is ideal for heavy-duty industrial motors used in conveyors, pumps, compressors, processing equipment and manufacturing machinery. Integrated Safe Torque Off (STO) functionality enhances machine safety and simplifies compliance with industrial safety requirements.
Variable frequency drives such as the Unitronics UMI-0550EU-B7 regulate motor speed by adjusting output voltage and frequency. This enables machinery to operate more efficiently while improving process accuracy, reducing mechanical wear and lowering overall energy consumption.
The UMI-B7 series has been developed for industrial automation engineers requiring advanced motion control, integrated safety and flexible connectivity. Built-in communication capabilities and optional expansion cards allow seamless integration into modern Industry 4.0 environments.
| Power | 55 kW |
|---|---|
| Current | 115 A |
| Voltage | 480 V |
| Phase | Three Phase |
| IP Rating | IP20 |
| Series | UMI-B7 |
| Product type | AC variable frequency drive |
| Rated output power | 55 kW / 75 HP |
| Input voltage | 380–480 V AC |
| Input phases | 3-phase |
| Input frequency | 50 / 60 Hz (47–63 Hz) |
| Output frequency | 0–400 Hz |
| Control methods | SVPWM, sensorless vector control, closed-loop vector control |
| Overload capacity | 150% for 60 s, 180% for 10 s, 200% for 1 s |
| Supported motors | Induction and permanent magnet synchronous motors |
| Protection rating | IP20 |
| Cooling method | Air cooling |
| Mounting type | Wall, floor or flange mounting |
| Safety function | Integrated STO (SIL2) |
| Operating temperature | -10°C to +50°C |
| EMC Filter | None |
The drive is used to control the speed, torque and operation of three-phase AC motors in industrial automation and heavy-duty machinery applications.
The UMI-0550EU-B7 supports motors rated up to 55 kW (75 HP).
The drive operates from a three-phase 380–480 V AC power supply.
Yes, the UMI-0550EU-B7 includes integrated Safe Torque Off (STO) functionality for enhanced machine safety.
Yes, it includes built-in RS-485 Modbus RTU communication and supports optional Ethernet and fieldbus communication modules.
Unitronics UMI-B7 variable frequency drives are widely used by machine builders and automation professionals to deliver reliable motor control, integrated safety and efficient operation across industrial applications.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...