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1SDA073746R1 ABB YR 250 VAC/DC E1.2 Undervoltage Release with Time Delay
ABB YR 250 VAC/DC E1.2 undervoltage release with time delay accessory for controlled opening of Emax 2 E1.2 air circuit breakers.
£203.73
Why Choose the ABB YR 250 VAC/DC E1.2 Undervoltage Release with Time Delay?
The ABB YR 250 VAC/DC E1.2 is a specialised undervoltage release accessory with time delay designed for ABB SACE Emax 2 low voltage air circuit breakers. As part of the advanced ABB Emax 2 accessory range, it provides controlled circuit breaker opening during undervoltage conditions while helping prevent unwanted tripping caused by short-duration voltage fluctuations.
This undervoltage release accessory is designed for integration with ABB E1.2 Emax 2 air circuit breakers, providing an electrical protection function that monitors the control voltage and initiates breaker opening when the supply remains below the required operating level for the configured delay period.
With a rated control voltage of 250 V AC/DC, the ABB YR 250 VAC/DC E1.2 provides a dependable solution for applications requiring delayed undervoltage protection and reliable circuit breaker control in industrial and commercial power distribution systems.
Key Advantages
- Dedicated ABB Emax 2 undervoltage release accessory.
- 250 V AC/DC control voltage for flexible control system integration.
- Provides delayed automatic circuit breaker opening during undervoltage conditions.
- Designed specifically for ABB E1.2 Emax 2 air circuit breakers.
- Helps prevent unnecessary trips caused by temporary voltage dips.
- Supports industrial protection and automation applications.
Key Features
- ABB SACE Emax 2 accessory.
- Undervoltage release with time delay (YR) function.
- 250 V AC/DC rated control voltage.
- Suitable for E1.2 Emax 2 air circuit breakers.
- Provides delayed breaker tripping under undervoltage conditions.
- AC/DC current compatibility.
- Designed for integration with ABB protection and control systems.
- IEC-compliant accessory solution for low voltage distribution systems.
Reliable Protection for Power Distribution Systems
Undervoltage releases with time delay provide an important protection function by monitoring circuit breaker control voltage and ensuring that breaker opening only occurs after a sustained undervoltage condition. This improves system stability by reducing unnecessary interruptions caused by brief voltage disturbances.
The ABB Emax 2 accessory platform provides modular solutions that extend circuit breaker functionality. These accessories allow engineers to configure advanced protection, automation and safety systems for modern electrical networks and industrial installations.
Typical Applications
- Industrial low voltage switchboards.
- Motor control and automation systems.
- Safety-related circuit breaker tripping systems.
- Power distribution panels.
- Industrial process installations.
- Critical electrical infrastructure applications.
Technical Specifications
| Product group | Emax2 Air Circuit Breaker accessories |
|---|---|
| Series | SACE Emax 2 |
| Order code | 1SDA073746R1 |
| Product type | Undervoltage release with time delay accessory |
| Accessory function | Delayed automatic circuit breaker opening under undervoltage conditions |
| Rated voltage | 250 V AC/DC |
| Current type | AC/DC |
| Compatible circuit breaker | ABB E1.2 Emax 2 |
| Installation | Internal circuit breaker accessory |
| Standards | IEC |
Frequently Asked Questions
What is the ABB YR 250 VAC/DC E1.2 used for?
This accessory provides delayed undervoltage protection for ABB E1.2 Emax 2 air circuit breakers by opening the breaker when a sustained undervoltage condition occurs.
What voltage does this undervoltage release operate at?
The ABB YR 250 VAC/DC E1.2 operates with a rated control voltage of 250 V AC/DC.
Which circuit breaker is compatible with this accessory?
This undervoltage release is designed for the ABB E1.2 Emax 2 air circuit breaker.
What type of accessory is this?
The product is an undervoltage release with time delay used to provide controlled automatic circuit breaker opening.
Where is this accessory installed?
The accessory is installed internally within compatible ABB Emax 2 circuit breakers as part of a low voltage power distribution protection system.
Trusted by Power Distribution Engineers Worldwide
ABB Emax 2 accessories are widely used by electrical engineers and system designers to enhance circuit breaker functionality, automation and operational safety in modern power distribution systems.
