UMI-0550CU-B7 Unitronics | 55 kW 3 Phase 200-240 VAC | VSD
MPN: UMI-0550CU-B7
Alt. SKU: UMI0550CUB7

Why Choose the UMI-0550CU-B7 Variable Frequency Drive?
When reliability, precision, and energy efficiency matter, the UMI-0550CU-B7 delivers. Designed for tough industrial environments, this 55 kW Variable Frequency Drive offers robust motor control and seamless integration with Unitronics PLCs and HMIs. Ideal for pumps, fans, conveyors, and compressors, it ensures stable and efficient motor operation in clean, dry settings.
Key Features of the UMI-0550CU-B7 VFD
- Power Rating – 55 kW (75 HP) for mid-to-large industrial motor applications.
- Voltage – 200–240V three-phase input for compatibility with industrial power systems.
- Enclosure Rating – IP20 for indoor installations (requires additional enclosure for outdoor use).
- Built-In EMC Filter – Reduces electrical noise for compliance with industrial EMC standards.
- Control Modes – Supports V/F Control, Sensorless Vector Control (SVC), and Torque Control.
- Safe Torque Off (STO) – Built-in functional safety to prevent unintended motor operation.
- Optional Dynamic Braking Unit – Available separately for applications needing rapid deceleration.
How to Install the UMI-0550CU-B7 VFD
The UMI-0550CU-B7 is designed for easy installation by qualified professionals. It is suitable for wall mounting in clean, dry indoor environments. If outdoor installation is necessary, the drive must be housed in a separate IP66-rated enclosure to ensure protection against dust and moisture. Always follow the manufacturer's wiring diagrams, ensure proper grounding, and adhere to local safety regulations for optimal performance and longevity.
UMI-0550CU-B7 – 55 kW Industrial VFD with Advanced Motor Control
Enhance your industrial applications with the UMI-0550CU-B7. Offering reliable motor speed control, safety features like Safe Torque Off (STO), and excellent energy efficiency, this VFD is ideal for demanding operations where performance and reliability are crucial.
Whether you're running pumps, fans, or heavy conveyors, the UMI-0550CU-B7 delivers consistent performance and advanced protection for your motors.
Key Features:
- 55 kW rated output for mid-to-large industrial motors.
- IP20 enclosure for clean, controlled indoor environments.
- Built-in EMC filter to minimise electromagnetic interference.
- Multiple motor control modes including Sensorless Vector Control (SVC).
- Safe Torque Off (STO) for enhanced operational safety.
- Optional dynamic braking unit for rapid stopping applications.
Installation Environment and Protection
The UMI-0550CU-B7 is suitable for indoor, dust-free, and dry environments. For outdoor use or exposure to harsh elements, a separate IP66-rated protective enclosure must be used to maintain safe operation and protect against environmental hazards.
Product Dimensions:
- Width: 325 mm
- Height: 680 mm
- Depth: 365 mm
Frequently Asked Questions About the UMI-0550CU-B7
- What does IP20 protection mean for the UMI-0550CU-B7?
- Can I use the UMI-0550CU-B7 outdoors?
- What motors are best suited for a 55 kW VFD?
- Does the UMI-0550CU-B7 have an EMC filter?
- Does the UMI-0550CU-B7 include a dynamic braking unit?
- Are VSD, VFD, Inverter, and Drive the same?
Applications:
- Industrial pumps and fans
- Conveyor belt systems
- HVAC motor control
- Water treatment facilities
- Compressors and manufacturing equipment
Why Choose the UMI-0550CU-B7?
- Energy-efficient motor control for industrial environments.
- Safe Torque Off (STO) for increased machinery safety.
- Compact footprint with advanced control capabilities.
- Optional braking and communication expansions for tailored installations.
Frequently Asked Questions
IP20 protection means that the UMI-0550CU-B7 is protected against solid objects larger than 12mm, such as fingers, but provides no protection against water ingress. It is therefore intended for clean, dry, indoor environments only.
No, the UMI-0550CU-B7 is not designed for outdoor installation. If required for outdoor use, it must be installed inside a suitable IP66-rated protective enclosure to safeguard against environmental exposure.
This drive is ideal for motors rated between approximately 50 kW and 60 kW, such as those used in pumps, conveyors, compressors, and large HVAC systems.
Yes, the UMI-0550CU-B7 includes a built-in EMC filter to minimise electromagnetic interference and comply with industrial EMC regulations for safe, reliable operation.
No, the dynamic braking unit is not built into the UMI-0550CU-B7 by default. It is available as an optional accessory and must be specified separately if required.
Yes. VSD (Variable Speed Drive), VFD (Variable Frequency Drive), and Inverter are different terms for devices that adjust the speed and torque of electric motors by varying the motor’s input frequency and voltage. These terms are often used interchangeably across industries.
What about Drive, Inverter Drive, and AC Drive?
Drive, Inverter Drive, and AC Drive are general terms describing equipment used to control AC motors, regulating their speed and efficiency.
Are ASD and AFD different?
Not really. ASD (Adjustable Speed Drive) and AFD (Adjustable Frequency Drive) are alternative terms for similar motor control technologies, focusing respectively on speed or frequency adjustment.
What is an LV Drive or Low V Drive?
LV Drive and Low V Drive both refer to Low Voltage Drives — drives operating motors typically under 1,000V, using the same control technologies as VSDs and VFDs.
Looking for a reliable, compact, and feature-rich 55 kW industrial VFD? The UMI-0550CU-B7 delivers advanced control, functional safety, and efficient motor management for demanding applications.