Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
1SDA104952R1 ABB YU-C XT5 W 380-440 V AC Undervoltage Release
ABB 1SDA104952R1 is a wired 380–440 V AC undervoltage release designed for withdrawable ABB SACE Tmax XT5 moulded case circuit breakers.
£128.03
Why Choose the ABB 1SDA104952R1 YU-C XT5 Undervoltage Release?
The ABB 1SDA104952R1, designated YU-C XT5 W 380...440 Vac, is a genuine ABB wired undervoltage release designed for withdrawable SACE Tmax XT5 moulded case circuit breakers. As part of the ABB SACE Tmax XT accessory range, it provides undervoltage protection by acting on the circuit-breaker operating mechanism when its control supply falls below the required level.
This YU-C release operates from a 380–440 V AC rated control supply and is specifically configured for the withdrawable XT5 circuit-breaker arrangement. An undervoltage release helps prevent the circuit breaker from remaining closed when the control voltage is insufficient, providing an important protective and control function in industrial electrical distribution systems.
Purpose-designed for the ABB SACE Tmax XT5 withdrawable configuration, the 1SDA104952R1 provides manufacturer-engineered compatibility with the corresponding circuit-breaker mechanism. Its wired construction simplifies integration into switchgear control circuits, making it suitable for industrial and commercial installations requiring dependable undervoltage protection and electrically controlled circuit-breaker operation.
Key Advantages
- Genuine ABB undervoltage release for Tmax XT5 circuit breakers.
- 380–440 V AC rated voltage for compatible industrial control supplies.
- Provides undervoltage protection for the associated circuit breaker.
- Wired YU-C configuration for straightforward control-circuit integration.
- Designed specifically for withdrawable XT5 circuit-breaker configurations.
- Suitable for industrial switchboards, automation systems and power distribution equipment.
Key Features
- ABB SACE Tmax XT accessory range.
- YU-C XT5 W 380...440 Vac product designation.
- Undervoltage release (UVR) functionality.
- 380–440 V AC rated voltage.
- Designed for XT5 withdrawable circuit breakers.
- Wired construction for electrical control integration.
- ABB accessory classification EC001022 - Under voltage coil.
- Suitable for low-voltage switchgear protection and control systems.
Reliable Undervoltage Protection for XT5 Circuit Breakers
An undervoltage release monitors the availability of its control voltage and acts on the circuit-breaker mechanism if that voltage falls below the level required for reliable operation. This functionality can help prevent equipment from remaining energised or restarting unexpectedly following a significant loss of control power.
The ABB 1SDA104952R1 provides this functionality for withdrawable Tmax XT5 circuit breakers. Its 380–440 V AC rating makes it suitable for compatible industrial control supplies, while its wired YU-C configuration supports integration into switchboards, machinery control systems and low-voltage power distribution assemblies.
Typical Applications
- Industrial low-voltage electrical switchboards.
- Power distribution and protection systems.
- Withdrawable ABB SACE Tmax XT5 circuit-breaker installations.
- Motor control centres and industrial control panels.
- Machinery requiring undervoltage protection.
- Automated electrical systems requiring circuit-breaker control during supply-voltage loss.
Technical Specifications
| Series | SACE Tmax XT |
|---|---|
| Product group | T-Max XT 250 Range |
| Model / order code | 1SDA104952R1 |
| Product designation | YU-C XT5 W 380...440 Vac |
| Product type | Wired undervoltage release |
| Accessory type | Undervoltage Release (UVR) |
| Product main type | Accessories - Electrical and Aux Contacts |
| Frame size | XT5 |
| Circuit-breaker configuration | Withdrawable |
| Current type | AC |
| Rated voltage | 380–440 V AC |
| Standards | IEC, UL |
| ETIM classification | EC001022 - Under voltage coil |
| Dimensions (W × H × D) | approx. 110 × 60 × 140 mm |
| Net weight | approx. 0.116 kg |
| Alternate catalogue number | KXT5YUCW6 |
| UPC / EAN | 8015644070441 |
| Customs tariff number | 85389099 |
Frequently Asked Questions
What is the ABB 1SDA104952R1 used for?
The ABB 1SDA104952R1 is a wired undervoltage release designed to provide undervoltage protection and control functionality for compatible withdrawable ABB SACE Tmax XT5 circuit breakers.
What voltage is the ABB 1SDA104952R1 rated for?
The undervoltage release is rated for a 380–440 V AC control supply.
Which circuit breakers are compatible with the ABB 1SDA104952R1?
The 1SDA104952R1 is specifically designed for ABB SACE Tmax XT5 withdrawable circuit breakers.
What does a YU-C undervoltage release do?
A YU-C undervoltage release acts on the circuit-breaker mechanism when its control supply falls below the required level, providing undervoltage protection and controlled opening functionality.
Is the ABB 1SDA104952R1 a wired version?
Yes. The 1SDA104952R1 is a wired YU-C undervoltage release designed for the withdrawable XT5 circuit-breaker configuration.
Trusted ABB Circuit-Breaker Protection
ABB SACE Tmax XT electrical accessories provide engineered solutions for circuit-breaker protection and control, helping compatible Tmax XT breakers integrate reliably into industrial and commercial low-voltage power distribution systems.
