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UMI-S0052 Unitronics UMI 1.5kW Brk Res. 500W, 230V
Unitronics UMI-S0052 braking resistor designed for variable frequency drive applications, featuring 500 W braking power, 85 ohm resistance and compatibility with 200-240 V AC systems.
£47.60
Why Choose the Unitronics UMI-S0052 Braking Resistor?
The Unitronics UMI-S0052 is a heavy-duty dynamic braking resistor designed for use with compatible Unitronics variable frequency drives (VFDs). Engineered to safely dissipate regenerative energy produced during motor deceleration, it helps improve stopping performance, protect drive electronics and minimise overvoltage faults in demanding industrial applications.
When motors decelerate rapidly, excess energy is returned to the drive's DC bus. The UMI-S0052 converts this regenerative energy into heat, allowing the drive to maintain stable operation while enabling faster and more controlled braking performance. This makes it ideal for applications requiring frequent start-stop cycles and precise motor control.
Designed for use with 200-240 V AC single-phase and three-phase systems, the UMI-S0052 features a 500 W braking power rating, an 85 Ω resistance value and is suitable for applications using drives rated up to 1.5 kW (2 HP). Its industrial-grade construction ensures dependable operation in manufacturing, automation and machine-building environments.
Key Advantages
- Improves dynamic braking performance in VFD applications.
- Helps prevent DC bus overvoltage conditions during deceleration.
- 500 W braking power rating for efficient energy dissipation.
- Compatible with 200-240 V AC single-phase and three-phase systems.
- Suitable for drives rated up to 1.5 kW / 2 HP.
- Industrial-grade design for long-term reliability.
Key Features
- Unitronics UMI braking resistor series.
- 500 W braking power.
- 1.5 kW (2 HP) drive compatibility.
- 85 Ω resistance value.
- 200-240 V AC operating systems.
- Compatible with single-phase and three-phase drives.
- Designed for regenerative energy dissipation.
- Compact industrial installation design.
Reliable Dynamic Braking for Variable Speed Drives
Braking resistors are essential components in variable frequency drive systems where motors regularly decelerate. During braking, regenerative energy is returned to the drive DC bus. The UMI-S0052 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 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 | 200–240 V AC | |
|---|---|---|
| Device Type | Drive / Servo Accessory | |
| Product Series | Unitronics Servo / Drives | |
| Power | 1.5 kW | |
| Voltage | 240 V | |
| Phase | Single Phase | |
| Product type | Braking resistor | |
| Braking power | 500 W | |
| Rated power | 1.5 kW | |
| Motor rating | 2 HP | |
| Resistance | 85 Ω | |
| Supply voltage | 200-240 V AC | |
| Nominal voltage | 220 V AC | |
| Phase compatibility | Single-phase and three-phase | |
| Application | Dynamic braking for VFD systems | |
| Mounting | Industrial panel installation | |
| Construction | Industrial-grade resistor assembly |
Frequently Asked Questions
What is the Unitronics UMI-S0052 used for?
The UMI-S0052 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 500 W braking power rating.
What drive size is it suitable for?
The UMI-S0052 is designed for applications using drives rated up to approximately 1.5 kW (2 HP).
What is the resistance value?
The braking resistor has a nominal resistance value of 85 Ω.
Can it be used with single-phase and three-phase systems?
Yes, the UMI-S0052 is suitable for both single-phase and three-phase 200-240 V AC drive applications.
Trusted for Reliable Drive Braking Performance
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.
