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UMI-0550EE-B1 Unitronics | 55 kW 3 Phase 380-480VAC | VSD
Unitronics UMI-0550EE-B1 variable frequency drive, a 55 kW three phase AC inverter with integrated STO safety, Modbus RTU communication and advanced motor control for industrial automation applications.
£2,042.41
Why Choose the Unitronics UMI-0550EE-B1 Variable Frequency Drive?
The Unitronics UMI-0550EE-B1 is a heavy-duty AC variable frequency drive (VFD) designed for precise speed and torque control of three-phase motors in demanding industrial automation, machinery and process applications. As part of the robust Unitronics UMI-B1 EU series, it delivers dependable inverter performance with integrated safety, communication and motor control capabilities.
Engineered for high-power industrial applications, the UMI-0550EE-B1 helps improve energy efficiency, reduce mechanical wear and optimise process control. The drive incorporates advanced motor control algorithms, built-in communication interfaces and integrated Safe Torque Off (STO) functionality for enhanced operational safety and automation system integration.
With a rated output power of 55 kW / 75 HP and a three-phase 380–480 V AC supply, the UMI-0550EE-B1 is ideal for large industrial motors used in pumps, fans, compressors, conveyors, production machinery and heavy-duty manufacturing systems.
Key Advantages
- Heavy-duty variable frequency drive for industrial motor control.
- 55 kW / 75 HP motor power rating for demanding applications.
- Three-phase 380–480 V AC input compatible with industrial power systems.
- Integrated Safe Torque Off (STO) safety functionality.
- Advanced sensorless vector control for accurate motor performance.
- Built-in EMC filtering and dynamic braking support.
- RS-485 Modbus RTU communication for PLC and automation integration.
Key Features
- Unitronics UMI-B1 EU series variable frequency drive.
- 55 kW rated output power.
- 75 HP motor rating.
- 115 A nominal output current.
- Three-phase 380–480 V AC input supply.
- 0–400 Hz output frequency range.
- Sensorless vector control and V/F control modes.
- Integrated Safe Torque Off (STO).
- RS-485 communication with Modbus RTU support.
- Wall or flange mounting options.
Reliable Motor Control for High-Power Machinery
Variable frequency drives such as the Unitronics UMI-0550EE-B1 regulate motor speed by adjusting output voltage and frequency. This enables industrial equipment to operate more efficiently while improving process accuracy, reducing energy consumption and minimising mechanical stress on motors and driven equipment.
The UMI-B1 series is designed for machine builders, panel builders and industrial automation engineers requiring dependable inverter performance in demanding environments. Integrated safety, communication and control features make it suitable for both new installations and retrofit projects.
Typical Applications
- Industrial pumps and water treatment systems.
- Fans, blowers and HVAC equipment.
- Compressors and process machinery.
- Heavy-duty conveyors and material handling systems.
- Manufacturing and production lines.
- OEM automation systems and machine building.
Technical Specifications
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| Power | 55 kW | |
|---|---|---|
| Current | 115 A | |
| Voltage | 480 V | |
| Phase | Three Phase | |
| IP Rating | IP20 | |
| EMC Filter | Industrial | |
| Series | UMI-B1 EU Series | |
| Product type | AC variable frequency drive | |
| Rated output power | 55 kW | |
| Horsepower rating | 75 HP | |
| Rated output current | 115 A | |
| Input voltage | 380–480 V AC | |
| Input phases | 3-phase | |
| Input frequency | 50 / 60 Hz | |
| Output frequency | 0–400 Hz | |
| Control methods | Sensorless Vector Control, V/F Control | |
| Safety function | Safe Torque Off (STO) | |
| Protection rating | IP20 | |
| Mounting type | Wall / flange mounting | |
| Overload capacity | 150% for 60 s, 180% for 10 s, 200% for 1 s |
Frequently Asked Questions
What is the Unitronics UMI-0550EE-B1 used for?
This drive controls the speed and torque of three-phase AC motors used in industrial automation, manufacturing and process applications.
What motor power is supported by this drive?
The drive supports motors with a rated output power of approximately 55 kW / 75 HP.
What supply voltage does the drive require?
The UMI-0550EE-B1 operates from a three-phase 380–480 V AC supply.
Does the drive include safety functionality?
Yes, the drive includes integrated Safe Torque Off (STO) functionality certified for industrial machine safety applications.
Can the drive be integrated with PLC systems?
Yes. The drive supports RS-485 Modbus RTU communication for integration with PLCs, HMIs and industrial automation networks.
Trusted by Industrial Automation Professionals
Unitronics UMI series variable frequency drives are widely used by machine builders and automation engineers to deliver reliable motor control, improved energy efficiency and flexible integration into modern industrial systems.
