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1SDA104955R1 ABB YU-C XT5-XT6 F/P 24–30 V AC/DC Undervoltage Release
ABB 1SDA104955R1 YU-C XT5-XT6 F/P 24…30 Vac/dc is a wired 24–30 V AC/DC undervoltage release designed for compatible ABB SACE Tmax XT5 and XT6 fixed and plug-in moulded-case circuit breakers.
£128.50
Why Choose the ABB YU-C XT5-XT6 F/P 24–30 V AC/DC Undervoltage Release?
The ABB 1SDA104955R1 YU-C XT5-XT6 F/P 24...30 Vac/dc is a wired undervoltage release designed for ABB SACE Tmax XT5 and XT6 moulded-case circuit breakers in fixed and plug-in configurations. Rated for 24–30 V AC/DC, it provides the dedicated undervoltage-release function required for compatible breaker control and protection systems.
The YU-C designation identifies ABB's wired version of the YU undervoltage release, while F/P denotes compatibility with fixed and plug-in circuit breaker arrangements. The release is designed to respond to loss or significant reduction of its auxiliary supply, providing controlled circuit breaker opening as part of an appropriate electrical protection or automation scheme.
As a genuine ABB SACE Tmax XT electrical accessory, the 1SDA104955R1 provides coordinated integration with both XT5 and XT6 frames. Its dual 24–30 V AC and 24–30 V DC rating provides flexibility for switchboards using low-voltage AC or DC auxiliary control supplies, while ABB specifies the accessory to IEC 60947-2 and UL 489.
Key Advantages
- Genuine ABB SACE Tmax XT wired undervoltage release.
- Compatible with both XT5 and XT6 circuit breaker frames.
- Designed for fixed and plug-in breaker configurations.
- Wide 24–30 V AC/DC rated voltage range.
- YU-C wired configuration for integration into compatible breaker assemblies.
- Supports undervoltage protection and electrically supervised breaker operation.
Key Features
- ABB SACE Tmax XT accessory range.
- YU-C XT5-XT6 F/P 24...30 Vac/dc product designation.
- Wired undervoltage release accessory.
- Designed for ABB Tmax XT5 and XT6 circuit breakers.
- F/P configuration for fixed and plug-in installations.
- Rated for 24–30 V AC and 24–30 V DC.
- Suitable for low-voltage AC or DC auxiliary control systems.
- Specified to IEC 60947-2 and UL 489.
Wired Undervoltage Protection for ABB Tmax XT5 and XT6
An undervoltage release links circuit breaker operation to the presence of an auxiliary control voltage. If the supply falls sufficiently below its rated level or is lost, the release acts on the compatible breaker mechanism to initiate opening; with the undervoltage release de-energised, the breaker cannot be closed. This provides a defined breaker response where continuity of the control supply is required for operation.
The ABB 1SDA104955R1 provides this functionality as a wired YU-C release for Tmax XT5 and XT6 fixed or plug-in breakers. Its 24–30 V AC/DC rating makes it particularly suitable for industrial control systems, switchboards and automation architectures using low-voltage auxiliary power.
Typical Applications
- ABB SACE Tmax XT5 fixed and plug-in circuit breaker installations.
- ABB SACE Tmax XT6 fixed and plug-in circuit breaker installations.
- Industrial low-voltage switchboards.
- Automated electrical distribution panels.
- Undervoltage-supervised breaker control circuits.
- Systems using 24–30 V AC/DC auxiliary control supplies.
Technical Specifications
| Series | SACE Tmax XT |
|---|---|
| Product ID / order code | 1SDA104955R1 |
| Alternate catalogue number | KXTFYUC1 |
| Product main type | Accessories – Electrical and Aux Contacts |
| Accessory type | Undervoltage Release (UVR) |
| Release designation | YU-C |
| Connection version | Wired / cabled |
| Compatible breaker frames | XT5 / XT6 |
| Breaker configurations | Fixed / plug-in |
| Rated AC voltage | 24–30 V AC |
| Rated DC voltage | 24–30 V DC |
| Current type | AC/DC |
| Reference standards | IEC 60947-2, UL 489 |
| Net weight | 0.109 kg |
| EAN / GTIN | 8056221027212 |
Frequently Asked Questions
What is the ABB 1SDA104955R1?
The ABB 1SDA104955R1 is a wired YU-C undervoltage release rated for 24–30 V AC/DC and designed for compatible ABB SACE Tmax XT5 and XT6 fixed or plug-in circuit breakers.
Which ABB circuit breaker frames are compatible with the 1SDA104955R1?
The release is designed for both ABB SACE Tmax XT5 and XT6 circuit breaker frames.
What do YU-C and F/P mean in the product designation?
YU-C identifies ABB's wired undervoltage release, while F/P identifies compatibility with fixed and plug-in circuit breaker configurations.
What voltage is the ABB 1SDA104955R1 rated for?
The 1SDA104955R1 is rated for both 24–30 V AC and 24–30 V DC auxiliary supplies.
What does the ABB YU-C undervoltage release do?
The YU-C monitors its auxiliary supply and acts on the compatible circuit breaker mechanism when the voltage falls sufficiently below the required level or is lost, providing the required undervoltage-release function.
Is the ABB 1SDA104955R1 a wired version?
Yes. ABB identifies the 1SDA104955R1 as a wired undervoltage release for XT5 and XT6 fixed or plug-in circuit breakers.
Which standards apply to the ABB 1SDA104955R1?
ABB specifies the accessory with reference to IEC 60947-2 and UL 489.
Trusted by Switchgear Professionals Worldwide
ABB SACE Tmax XT electrical accessories are engineered for coordinated integration with compatible moulded-case circuit breakers, helping panel builders, electrical contractors and industrial engineers implement dependable control, undervoltage protection and automation within low-voltage power distribution systems.
