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1SDA104957R1 ABB YU-C XT5-XT6 F/P Undervoltage Release
ABB 1SDA104957R1 is a wired undervoltage release rated for 110–127 V AC or 110–125 V DC and designed for compatible fixed and plug-in ABB SACE Tmax XT5 and XT6 circuit breakers.
£128.50
Why Choose the ABB 1SDA104957R1 YU-C XT5-XT6 F/P Undervoltage Release?
The ABB 1SDA104957R1 is a genuine wired undervoltage release (UVR) designed for ABB SACE Tmax XT5 and XT6 moulded case circuit breakers. Identified as YU-C XT5-XT6 F/P 110..127Vac-110..125Vdc, it provides fail-safe electrical control by initiating circuit-breaker opening when its auxiliary control supply falls below the required operating level.
Designed for 110–127 V AC or 110–125 V DC control supplies, the 1SDA104957R1 accommodates common industrial auxiliary voltages. The YU-C configuration is intended for fixed and plug-in XT5 and XT6 circuit breakers, providing a manufacturer-matched electrical accessory for professional low-voltage switchgear.
An undervoltage release is particularly useful where loss or significant reduction of control power must result in automatic circuit isolation. The 1SDA104957R1 therefore suits machinery, process equipment, automated switchboards and power distribution systems requiring dependable fail-safe circuit-breaker operation.
Key Advantages
- Genuine ABB wired undervoltage release for SACE Tmax XT circuit breakers.
- Compatible with both ABB XT5 and XT6 frame sizes.
- Designed for fixed and plug-in circuit-breaker configurations.
- Rated for 110–127 V AC control supplies.
- Rated for 110–125 V DC control supplies.
- Provides fail-safe circuit-breaker opening following significant loss or reduction of auxiliary control voltage.
Key Features
- ABB SACE Tmax XT accessory range.
- YU-C XT5-XT6 F/P 110..127Vac-110..125Vdc product configuration.
- Wired undervoltage release (UVR).
- Compatible with XT5 and XT6 circuit breakers.
- Designed for fixed and plug-in configurations.
- 110–127 V AC rated control voltage.
- 110–125 V DC rated control voltage.
- AC/DC capability for flexible integration into industrial control systems.
Fail-Safe Undervoltage Protection for ABB Tmax XT5 and XT6
An undervoltage release is energised during normal operation and interacts with the circuit-breaker mechanism. If its auxiliary supply falls sufficiently below the required level or is lost, the release causes the associated circuit breaker to open. This provides a fail-safe response where continued operation following loss of control power could be undesirable.
The ABB 1SDA104957R1 provides this functionality with 110–127 V AC and 110–125 V DC control supplies. Its wired YU-C configuration is designed for compatible fixed and plug-in XT5 and XT6 circuit breakers, making it suitable for industrial control, machinery protection and automated low-voltage distribution systems.
Typical Applications
- ABB SACE Tmax XT5 moulded case circuit breakers.
- ABB SACE Tmax XT6 moulded case circuit breakers.
- Fixed and plug-in XT5 / XT6 installations.
- Undervoltage protection and fail-safe circuit isolation.
- Industrial low-voltage switchboards.
- Machinery and automation control systems.
- Automated power distribution systems.
- OEM switchgear and panel-building applications.
Technical Specifications
| Series | SACE Tmax XT |
|---|---|
| Product group | T-Max XT 250 Range |
| Order code / MPN | 1SDA104957R1 |
| Product type | Wired undervoltage release (UVR) |
| Compatible frame sizes | XT5 / XT6 |
| Circuit-breaker configurations | Fixed / plug-in |
| Configuration | Wired |
| Rated AC control voltage | 110–127 V AC |
| Rated DC control voltage | 110–125 V DC |
| Control voltage type | AC/DC |
| Function | Undervoltage release for fail-safe circuit-breaker opening |
Frequently Asked Questions
What is the ABB 1SDA104957R1 used for?
The ABB 1SDA104957R1 is a wired undervoltage release used with compatible ABB SACE Tmax XT5 and XT6 circuit breakers to initiate opening when the auxiliary control voltage falls sufficiently below its required operating level.
Which ABB circuit breakers are compatible with the 1SDA104957R1?
The 1SDA104957R1 is designed for compatible ABB SACE Tmax XT5 and XT6 fixed and plug-in circuit breakers.
What control voltage does the ABB 1SDA104957R1 accept?
The YU-C undervoltage release is rated for 110–127 V AC and 110–125 V DC control supplies.
What does YU-C mean on the ABB 1SDA104957R1?
YU-C identifies a wired ABB undervoltage release used to provide fail-safe opening of a compatible circuit breaker when its auxiliary control supply falls below the required operating level.
What happens if the ABB YU-C undervoltage release loses its control supply?
If the auxiliary supply is lost or falls sufficiently below its operating level, the undervoltage release causes the associated circuit breaker to open, providing fail-safe isolation for the installation.
Trusted ABB Components for Electrical Distribution
ABB SACE Tmax XT undervoltage releases provide dependable fail-safe circuit-breaker control for industrial switchboards, machinery systems, automated equipment and professional low-voltage power distribution applications.
