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1SDA038308R1 ABB Under Voltage Release 48 V AC/DC
ABB 1SDA038308R1 is a 48 V AC/DC under voltage release designed to provide voltage-dependent tripping and control for compatible ABB E1–E6 and T8 circuit breakers.
£461.06
Why Choose the ABB 1SDA038308R1 Under Voltage Release?
The ABB 1SDA038308R1 is a dependable under voltage release (UVR) designed for use with compatible ABB circuit breakers. Part of the ABB New Emax accessory range, this release provides voltage-dependent circuit-breaker control by allowing the breaker to remain closed while the required control voltage is present and initiating opening when the control voltage falls sufficiently.
Also known as a YU minimum voltage release, the 1SDA038308R1 provides an important protective and control function in electrical distribution systems. Under voltage releases are commonly used where equipment must disconnect automatically following a significant loss or reduction of control voltage, helping prevent unwanted operation or automatic re-energisation until the appropriate operating conditions have been restored.
With a 48 V AC/DC control voltage, the 1SDA038308R1 is designed for compatible ABB E1–E6 and T8 circuit-breaker applications. Its dedicated ABB design makes it suitable for industrial switchboards, power distribution equipment and automation systems requiring dependable under-voltage tripping functionality.
Key Advantages
- Genuine ABB under voltage release (UVR) for compatible circuit breakers.
- 48 V AC/DC control voltage for industrial control systems.
- Provides automatic circuit-breaker opening following sufficient control-voltage reduction.
- Suitable for ABB E1–E6 and T8 circuit-breaker applications.
- Helps prevent unintended circuit-breaker closing when the required control voltage is unavailable.
- Suitable for integration into industrial protection, switchboard and automation systems.
Key Features
- ABB New Emax under voltage release.
- 48 V AC/DC rated control voltage.
- YU minimum voltage release functionality.
- Voltage-dependent circuit-breaker opening and closing control.
- Designed for compatible E1–E6 and T8 circuit breakers.
- Suitable for industrial low-voltage power distribution systems.
- Dedicated circuit-breaker accessory for electrical protection and control.
- ABB order code 1SDA038308R1.
Reliable Under-Voltage Circuit-Breaker Protection
An under voltage release monitors its control supply as part of the circuit-breaker operating mechanism. When sufficient control voltage is available, the release permits normal breaker operation. If that voltage falls below the operating threshold, the release causes the compatible circuit breaker to open and prevents normal closing until adequate control voltage has been restored.
This functionality makes the ABB 1SDA038308R1 particularly useful in installations where equipment should disconnect following a control-supply failure or significant voltage reduction. Its 48 V AC/DC control rating makes it suitable for integration into compatible industrial control, protection and power management systems.
Typical Applications
- Under-voltage protection for compatible ABB circuit breakers.
- Industrial electrical distribution switchboards.
- Low-voltage power distribution systems.
- Machinery and industrial control systems.
- Electrical protection and automation circuits.
- Power management and safety-related control applications.
Technical Specifications
| Series | New Emax |
|---|---|
| Product group | 310513-New Emax |
| Model / order code | 1SDA038308R1 |
| Product type | Under voltage release (UVR) |
| ABB description | UNDER VOLTAGE RELEASE 48V E1/6-T8 |
| Control voltage | 48 V AC/DC |
| Current type | AC/DC |
| Release designation | YU |
| Function | Under-voltage circuit-breaker release |
| Suitable for | E1–E6, T8 |
| Application | Circuit-breaker protection and control |
Frequently Asked Questions
What is the ABB 1SDA038308R1 used for?
The ABB 1SDA038308R1 is an under voltage release used with compatible ABB circuit breakers to provide voltage-dependent tripping and help ensure the breaker opens when its control voltage falls sufficiently.
What control voltage does the ABB 1SDA038308R1 use?
The 1SDA038308R1 is designed for a 48 V AC/DC control voltage.
What does an under voltage release do?
An under voltage release allows a compatible circuit breaker to operate while adequate control voltage is present and causes the breaker to open if that voltage falls sufficiently, helping protect equipment following a control-supply failure or significant voltage reduction.
Which ABB circuit breakers are suitable for the 1SDA038308R1?
The 1SDA038308R1 is designed for compatible ABB E1–E6 and T8 circuit-breaker applications.
Where is the ABB 1SDA038308R1 typically used?
It is typically used in electrical switchboards, industrial power distribution systems and automation installations where a compatible circuit breaker needs to respond automatically to loss or reduction of its control voltage.
Trusted ABB Circuit-Breaker Accessories
ABB New Emax circuit-breaker accessories provide integrated control and protection functionality for industrial and commercial power distribution systems, helping engineers implement dependable switching, under-voltage protection and circuit-breaker control.
