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UMI-S0062 Unitronics UMI 22-30kW Brk Res. 4.5kW, 480V
Unitronics UMI-S0062 braking resistor designed for variable frequency drive applications, featuring 4.5 kW braking power, 20 ohm resistance and compatibility with 400-480 V AC three-phase systems.
£324.28
Why Choose the Unitronics UMI-S0062 Braking Resistor?
The Unitronics UMI-S0062 is a high-capacity dynamic braking resistor designed for use with compatible Unitronics variable frequency drives (VFDs). Engineered to dissipate regenerative energy generated during motor deceleration, it helps improve braking performance, protect drive electronics and prevent DC bus overvoltage faults in demanding industrial applications.
When motors decelerate rapidly, excess energy is returned to the drive's DC bus. The UMI-S0062 converts this regenerative energy into heat, allowing the drive to maintain stable operation while delivering faster and more controlled stopping performance. This makes it ideal for high-inertia machinery, material handling systems and industrial processes requiring rapid deceleration.
Designed for 400-480 V AC three-phase systems, the UMI-S0062 features a 4.5 kW braking power rating, a 20 Ω resistance value and is suitable for applications using drives rated from 22 kW to 30 kW (30 HP to 40 HP). Its industrial-grade construction ensures dependable operation in manufacturing, automation and heavy-duty machinery environments.
Key Advantages
- Improves dynamic braking performance in VFD applications.
- Helps prevent DC bus overvoltage conditions during deceleration.
- 4.5 kW braking power rating for efficient energy dissipation.
- Compatible with 400-480 V AC three-phase systems.
- Suitable for drives rated from 22 kW to 30 kW.
- Industrial-grade construction for reliable long-term operation.
Key Features
- Unitronics UMI braking resistor series.
- 4.5 kW braking power.
- 22-30 kW (30-40 HP) drive compatibility.
- 20 Ω resistance value.
- 400-480 V AC three-phase operation.
- Designed for regenerative energy dissipation.
- Suitable for high-inertia applications.
- Industrial installation design.
Reliable Dynamic Braking for Variable Speed Drives
Braking resistors are essential components in variable frequency drive systems where motors frequently decelerate. During braking, regenerative energy is returned to the drive DC bus. The UMI-S0062 safely dissipates this excess energy, helping maintain stable drive operation while enabling faster and more controlled stopping performance.
This improves machine productivity, protects drive electronics and enhances operational safety in applications requiring rapid speed changes, frequent stopping cycles or precision motor control.
Typical Applications
- Conveyor and material handling systems.
- Packaging and production machinery.
- Hoists, cranes and lifting equipment.
- Industrial fans and pumps.
- Machine tools and automation equipment.
- OEM machinery and manufacturing systems.
Technical Specifications
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| Coil / Supply Voltage | 400–480 V AC | |
|---|---|---|
| Device Type | Drive / Servo Accessory | |
| Product Series | Unitronics Servo / Drives | |
| Power | 4.5 kW | |
| Voltage | 480 V | |
| Phase | Three Phase | |
| Product type | Braking resistor | |
| Braking power | 4.5 kW | |
| Drive power range | 22 kW to 30 kW | |
| Motor rating | 30 HP to 40 HP | |
| Resistance | 20 Ω | |
| Supply voltage | 400-480 V AC | |
| Nominal voltage | 460 V AC | |
| Phase compatibility | Three-phase | |
| Dimensions (H × W × D) | Approx. 600 × 341 × 145 mm | |
| Application | Dynamic braking for VFD systems | |
| Mounting | Industrial panel installation |
Frequently Asked Questions
What is the Unitronics UMI-S0062 used for?
The UMI-S0062 is a braking resistor used with compatible variable frequency drives to dissipate regenerative energy generated during motor deceleration.
What braking power does the resistor provide?
The resistor provides a 4.5 kW braking power rating.
What drive size is it suitable for?
The UMI-S0062 is designed for applications using drives rated from 22 kW to 30 kW (30 HP to 40 HP).
What is the resistance value?
The braking resistor has a nominal resistance value of 20 Ω.
What supply voltage is supported?
The UMI-S0062 is designed for use with 400-480 V AC three-phase drive systems.
Trusted for Heavy-Duty Drive Braking Applications
Unitronics braking resistors are widely used in industrial automation systems to improve deceleration performance, protect VFDs from overvoltage conditions and enhance machine control during demanding operating cycles.
