Unitronics UMI-S0065 braking resistor designed for high-power variable frequency drive applications, featuring 13 kW braking power, 4.5 ohm resistance and compatibility with 400-480 V AC three-phase systems.
£1,004.50
The Unitronics UMI-S0065 is a high-capacity dynamic braking resistor designed for use with compatible Unitronics variable frequency drives (VFDs). Engineered for demanding industrial applications, it safely dissipates regenerative energy generated during motor deceleration, helping improve braking performance, protect drive electronics and prevent DC bus overvoltage faults.
During rapid deceleration, motors return excess energy to the drive's DC bus. The UMI-S0065 converts this regenerative energy into heat, allowing the drive to maintain stable operation while delivering fast and controlled stopping performance. This makes it ideal for heavy-duty machinery, material handling systems and industrial processes requiring rapid braking and precise motor control.
Designed for 480 V AC three-phase systems, the UMI-S0065 features a 13 kW braking power rating, a 4.5 Ω resistance value and is suitable for applications using drives rated from 90 kW to 110 kW (120 HP to 150 HP). Its industrial-grade construction ensures dependable operation in high-power automation and manufacturing environments.
Braking resistors are critical components in high-power variable frequency drive systems where motors frequently decelerate under load. During braking, regenerative energy is returned to the drive DC bus. The UMI-S0065 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, high inertia braking or precision motor control.
| Power | 13 kW |
|---|---|
| Voltage | 480 V |
| Phase | Three Phase |
| Product type | Braking resistor |
| Braking power | 13 kW |
| Drive power range | 90 kW to 110 kW |
| Motor rating | 120 HP to 150 HP |
| Resistance | 4.5 Ω |
| Supply voltage | 400-480 V AC |
| Nominal voltage | 460-480 V AC |
| Phase compatibility | Three-phase |
| Dimensions (H × W × D) | Approx. 685 × 410 × 344 mm |
| Application | Dynamic braking for VFD systems |
| Mounting | Industrial panel or enclosure installation |
The UMI-S0065 is a braking resistor used with compatible variable frequency drives to dissipate regenerative energy generated during motor deceleration.
The resistor provides a 13 kW braking power rating.
The UMI-S0065 is designed for applications using drives rated from 90 kW to 110 kW (120 HP to 150 HP).
The braking resistor has a nominal resistance value of 4.5 Ω.
The UMI-S0065 is designed for use with 400-480 V AC three-phase drive systems.
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.
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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...