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1SDA073699R1 ABB YU E1.2..E6.2 120-127 VAC/DC Undervoltage Release
ABB 1SDA073699R1 YU 120–127 V AC/DC undervoltage release for voltage-dependent tripping of compatible SACE Emax 2 E1.2, E2.2, E4.2 and E6.2 circuit breakers.
£167.05
Why Choose the ABB YU E1.2..E6.2 120-127 VAC/DC Undervoltage Release?
The ABB YU E1.2..E6.2 120-127 VAC/DC, order code 1SDA073699R1, is an undervoltage release designed for compatible ABB SACE Emax 2 air circuit breakers. Operating from a 120–127 V AC/DC control supply, the YU release provides voltage-dependent tripping functionality for low-voltage switchgear and power-distribution applications.
As part of the ABB Emax 2 electrical accessory range, the YU undervoltage release is suitable across the E1.2, E2.2, E4.2 and E6.2 breaker frame sizes, providing a common accessory solution throughout the Emax 2 family. ABB also specifies this version for compatible XT7 and XT7M circuit breakers.
The undervoltage release is used where circuit-breaker operation must respond to loss or significant reduction of its control supply. This makes the 1SDA073699R1 particularly useful in industrial distribution systems, switchboards and safety-related control schemes where a breaker must not remain closed when the required control voltage is unavailable.
Key Advantages
- Genuine ABB YU undervoltage release for compatible circuit breakers.
- 120–127 V AC/DC rated voltage for AC or DC control systems.
- Compatible with SACE Emax 2 E1.2, E2.2, E4.2 and E6.2 frame sizes.
- Also designed for compatible XT7 and XT7M circuit breakers.
- Provides automatic breaker response to an unacceptable reduction or loss of control voltage.
- Supports dependable electrical interlocking and power-system protection schemes.
Key Features
- ABB YU undervoltage release.
- 120–127 V AC/DC rated voltage.
- Designed for ABB SACE Emax 2 air circuit breakers.
- Compatible with E1.2 through E6.2 frame sizes.
- Compatibility with XT7 and XT7M circuit breakers.
- Trips the associated breaker in response to insufficient supply voltage.
- Prevents normal breaker closing when the undervoltage release is not adequately energised.
- Compatible with an appropriate ABB UVD electronic time-delay device where delayed undervoltage operation is required.
- ABB order code 1SDA073699R1.
Reliable Undervoltage Protection for Circuit Breakers
An undervoltage release continuously links the ability of a circuit breaker to remain closed with the presence of an adequate control voltage. If the supply to the release falls sufficiently, the mechanism causes the associated circuit breaker to open, helping place the electrical installation into a defined state following control-power failure.
The ABB YU accessory integrates directly with the modular SACE Emax 2 platform and can also be used with specified XT7 and XT7M breakers. For applications requiring intentional delay before undervoltage tripping, ABB provides compatible UVD electronic time-delay devices matched to the relevant release voltage range.
Typical Applications
- Industrial low-voltage power-distribution switchboards.
- Undervoltage protection of ABB SACE Emax 2 circuit breakers.
- Electrical interlocking and control systems.
- Generator and utility distribution panels.
- Automated switchgear and power-management systems.
- Commercial and infrastructure electrical distribution.
Technical Specifications
| Series | SACE Emax 2 |
|---|---|
| Order code | 1SDA073699R1 |
| Product type | Undervoltage release / undervoltage coil |
| Accessory designation | YU |
| Rated voltage | 120–127 V AC/DC |
| Current type | AC/DC |
| Compatible Emax 2 frame sizes | E1.2, E2.2, E4.2 and E6.2 |
| Additional compatibility | XT7 and XT7M |
| Function | Undervoltage protection and circuit-breaker release |
| Standard | IEC |
| EAN | 8015644776329 |
Frequently Asked Questions
What is the ABB 1SDA073699R1 used for?
The ABB 1SDA073699R1 is a YU undervoltage release used with compatible circuit breakers to provide voltage-dependent tripping when the control supply falls below the required operating level.
What voltage is the ABB 1SDA073699R1 rated for?
The YU undervoltage release is rated for a 120–127 V AC/DC supply.
Which Emax 2 circuit breakers are compatible with this YU release?
The accessory is designed for ABB SACE Emax 2 E1.2, E2.2, E4.2 and E6.2 frame sizes.
What happens when the supply to the YU undervoltage release is lost?
The YU release is designed to cause the associated circuit breaker to open when its supply voltage falls sufficiently and to prevent normal closing while adequate release voltage is unavailable.
Can undervoltage tripping be delayed?
Yes. ABB provides a compatible UVD electronic time-delay device for applications where a defined delay is required before the undervoltage release operates.
Trusted Undervoltage Protection for ABB Circuit Breakers
ABB SACE Emax 2 electrical accessories provide modular protection and control functionality for modern low-voltage distribution systems, with YU undervoltage releases helping ensure predictable circuit-breaker operation when control voltage is lost or significantly reduced.
