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UMI-S0070 Unitronics UMI 1.5-2.2kW Mounting Plate
MPN: UMI-S0070
Alt. SKU: UMIS0070
Special Price
£16.07
£13.39
Regular Price
£18.90
Why Choose the Unitronics UMI-S0070 Braking Resistor?
The Unitronics UMI-S0070 is a heavy-duty dynamic braking resistor designed for high-power Unitronics variable frequency drive (VFD) systems. It dissipates regenerative energy produced during motor deceleration, enabling controlled stopping while protecting the drive from DC bus overvoltage conditions.
When an AC motor slows down, its rotating inertia can cause it to act as a generator and feed energy back into the drive. Without a braking resistor this regenerative energy may increase the DC bus voltage and trigger faults or shutdowns. The UMI-S0070 converts this excess electrical energy into heat, ensuring stable drive operation and safe braking performance in demanding industrial automation systems.
Designed for 400–480 V three-phase drive installations, the resistor is typically used with larger VFD systems controlling high-power motors where rapid deceleration or frequent stopping cycles occur. Braking resistors are widely used in industrial conveyors, machinery and automated production equipment where reliable drive protection and braking performance are essential.
Key Features
- Dynamic braking resistor for industrial variable frequency drives.
- Designed for 400–480 V three-phase VFD systems.
- Dissipates regenerative energy during motor braking and deceleration.
- Helps prevent DC bus overvoltage faults in the drive.
- Suitable for high-power industrial drive applications.
- Robust design for installation in automation control panels or machinery.
Technical Specifications
- Manufacturer: Unitronics
- Model: UMI-S0070
- Product type: Dynamic braking resistor
- Application: Energy dissipation for VFD braking systems
- Supply voltage: approx. 400–480 V AC
- Phase compatibility: Three-phase drive systems
- Function: Dissipation of regenerative braking energy
- Installation: External braking resistor for Unitronics VFDs
- Use case: Rapid deceleration and braking of industrial motors
Typical Applications
- High-power variable frequency drive braking systems.
- Industrial conveyors and material handling equipment.
- Production machinery and automated manufacturing lines.
- Large pumps, fans and industrial motor installations.
- Machine tools and heavy automation systems.
Frequently Asked Questions
What is the UMI-S0070 used for?
The UMI-S0070 is a braking resistor used with a variable frequency drive to dissipate regenerative energy produced when a motor decelerates.
Why are braking resistors used with VFDs?
When a motor slows down it generates electrical energy that flows back into the drive. A braking resistor converts this energy into heat to prevent DC bus overvoltage faults.
What systems can this resistor be used with?
The UMI-S0070 is designed for industrial VFD systems operating on approximately 400–480 V three-phase power.
Where are braking resistors typically used?
They are commonly used in automation machinery, conveyors, machine tools and other industrial systems where rapid motor deceleration is required.
Trusted by Automation Engineers
Dynamic braking resistors are widely used in industrial drive systems to enable safe motor deceleration and protect VFD electronics from regenerative overvoltage.
| Packed Quantity | 1 |
|---|---|
| Manufacturer | Unitronics |
| Manufacturer Part Number | UMI-S0070 |
| Alternative Product SKU | UMIS0070 |
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