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1SDA038311R1 ABB Under Voltage Release 120–127 V AC/DC E1/6-T8
ABB 1SDA038311R1 is a 120–127 V AC/DC under voltage release for voltage-dependent tripping of compatible SACE Emax E1, E2, E3, E4 and E6 and SACE Tmax T8 circuit breakers.
£461.06
Why Choose the ABB 1SDA038311R1 Under Voltage Release?
The ABB 1SDA038311R1 is a dependable under voltage release (UVR / YU) designed for voltage-dependent tripping of compatible ABB circuit breakers. As part of the ABB SACE Emax accessory range, it provides an important control and protection function by enabling the circuit breaker to open when the release supply voltage falls below the required operating level.
This under voltage release is rated for a 120–127 V AC/DC control supply and is suitable for ABB E1, E2, E3, E4, E6 and T8 circuit breakers. Its AC/DC capability provides flexibility for integration into industrial switchboards, power distribution systems and control installations requiring circuit breaker operation to respond to loss or reduction of control voltage.
Unlike a shunt opening release, which trips the breaker when its coil is energised, an under voltage release is maintained by its control supply and provides protective opening when that supply falls sufficiently. The 1SDA038311R1 is therefore well suited to applications where equipment must not remain energised, or be reclosed, following an unacceptable loss of control voltage.
Key Advantages
- Genuine ABB under voltage release (UVR / YU) for circuit breaker control and protection.
- 120–127 V AC/DC rated control voltage.
- Compatible with ABB E1, E2, E3, E4, E6 and T8 circuit breakers.
- Suitable for SACE Emax and SACE Tmax T circuit breaker systems.
- Supports automatic breaker opening following an unacceptable reduction or loss of release supply voltage.
- AC/DC operation provides flexible integration into industrial control and power distribution systems.
Key Features
- ABB SACE Emax under voltage release.
- 120–127 V AC/DC rated voltage.
- Under voltage release designation YU.
- Suitable for E1, E2, E3, E4, E6 and T8 circuit breakers.
- Compatible with SACE Emax and SACE Tmax T product classes.
- Designed for voltage-dependent circuit breaker tripping.
- Loose or configurable accessory configuration.
- ABB order code 1SDA038311R1.
Reliable Under Voltage Circuit Breaker Protection
An under voltage release provides voltage-dependent control of a circuit breaker. During normal operation the release is supplied with its specified control voltage; if that voltage falls sufficiently, the release acts on the breaker mechanism so that the circuit breaker opens. This helps prevent equipment from remaining connected during unsuitable supply or control conditions.
The ABB 1SDA038311R1 provides this functionality for compatible SACE Emax and Tmax T circuit breakers using a 120–127 V AC/DC control supply. It is particularly useful in switchboards, industrial distribution systems and automated installations where loss of control voltage must result in circuit breaker opening.
Typical Applications
- Low-voltage switchboards and distribution panels.
- Under voltage protection and control circuits.
- Industrial power distribution installations.
- Automatic circuit breaker tripping systems.
- Process control and automation installations.
- ABB SACE Emax air circuit breaker systems.
- Compatible ABB SACE Tmax T8 circuit breaker installations.
Technical Specifications
| Series | SACE Emax Accessories |
|---|---|
| Product group | New Emax |
| Model / order code | 1SDA038311R1 |
| Extended product type | UNDER VOLTAGE RELEASE 120/127V E1/6-T8 |
| Product type | Under voltage release |
| Release designation | UVR / YU |
| Function | Voltage-dependent circuit breaker opening |
| Rated control voltage | 120–127 V AC/DC |
| Current type | AC/DC |
| Suitable for | E1, E2, E3, E4, E6 and T8 |
| Suitable product classes | SACE Emax, SACE Tmax T |
| Configuration type | Loose or configurable |
| Standard | IEC |
| EAN | 8015644383114 |
| Minimum order quantity | 1 piece |
| Customs tariff number | 85389099 |
| Product net weight | 1 kg |
Frequently Asked Questions
What is the ABB 1SDA038311R1 used for?
The ABB 1SDA038311R1 is an under voltage release used with compatible ABB circuit breakers to provide voltage-dependent tripping when the release supply voltage falls below the required operating level.
What control voltage does the ABB 1SDA038311R1 require?
The under voltage release is rated for a 120–127 V AC/DC control supply.
Which ABB circuit breakers are compatible with the 1SDA038311R1?
The 1SDA038311R1 is suitable for ABB E1, E2, E3, E4, E6 and T8 circuit breakers within the compatible SACE Emax and SACE Tmax T product classes.
Can the ABB 1SDA038311R1 operate with both AC and DC control supplies?
Yes. The release is specified for 120–127 V AC/DC, allowing operation with compatible AC or DC control circuits within its rated voltage range.
What is the difference between an under voltage release and a shunt opening release?
An under voltage release provides voltage-dependent protection and causes the breaker to open when its control supply falls sufficiently, whereas a shunt opening release trips the breaker when an electrical opening command energises its coil.
Trusted ABB Circuit Breaker Accessories
ABB SACE Emax circuit breaker accessories provide flexible control, protection and operating functions for low-voltage systems, supporting dependable integration into industrial switchboards, power distribution networks and automation installations.
