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1SDA038320R1 ABB Electronic Time Delay 220–250 V AC/DC for Under Voltage Release
ABB 1SDA038320R1 is a 220–250 V AC/DC electronic time delay unit with selectable 0.5–3 s delay for compatible ABB circuit breaker under voltage releases.
£540.78
Why Choose the ABB 1SDA038320R1 Electronic Time Delay?
The ABB 1SDA038320R1 is an electronic time delay unit for under voltage releases (UVD) designed to prevent unnecessary circuit breaker tripping during short-duration voltage dips. Used with compatible ABB circuit breakers and under voltage releases, it introduces a selectable delay before the under voltage release initiates breaker opening.
Operating from a 220–250 V AC/DC control supply, the 1SDA038320R1 provides selectable delay settings of 0.5, 1, 1.5, 2 and 3 s. This allows the protection system to ride through brief voltage disturbances while retaining the protective function of the associated under voltage release if the low-voltage condition persists.
The unit supports a broad range of ABB circuit breaker platforms, including SACE Emax, Emax 2, Tmax T, Tmax XT and Emax X1 families. Its combination of adjustable timing and AC/DC operation makes it suitable for industrial switchboards, power distribution systems and automated installations where controlled under voltage tripping is required.
Key Advantages
- Electronic time delay unit for ABB under voltage releases.
- 220–250 V AC/DC rated control voltage.
- Selectable 0.5–3 s time delay range.
- Delay settings of 0.5, 1, 1.5, 2 and 3 s.
- Helps prevent unwanted breaker opening during short-duration voltage dips.
- Compatible with multiple ABB Emax, Emax 2, Tmax T and Tmax XT circuit breaker platforms.
Key Features
- ABB electronic under voltage delay unit (UVD).
- 220–250 V AC/DC control supply.
- 0.5–3 s adjustable delay range.
- Designed for use with compatible under voltage releases (UVR / YU).
- Suitable for E1–E6, T7/T7M, X1, T8, E1.2–E6.2 and XT7/XT7M applications.
- Supports controlled under voltage tripping in power distribution systems.
- IEC-rated electrical accessory.
- ABB order code 1SDA038320R1.
Controlled Under Voltage Tripping
An under voltage release normally causes its associated circuit breaker to open when the control voltage falls below the required operating level. In installations subject to brief voltage dips, immediate operation may cause unnecessary interruption even though the supply recovers quickly.
The ABB 1SDA038320R1 adds an electronic delay to the under voltage release function. Its selectable 0.5–3 s timing allows short disturbances to pass without immediate breaker opening while ensuring that a sustained under voltage condition can still initiate the required protective trip.
Typical Applications
- Low-voltage switchboards and distribution panels.
- Delayed under voltage release systems.
- Industrial power distribution installations.
- Protection against nuisance tripping during short voltage dips.
- Automated electrical distribution and control systems.
- ABB SACE Emax and Emax 2 circuit breaker installations.
- Compatible ABB Tmax T and Tmax XT circuit breaker installations.
Technical Specifications
| Product group | New Emax |
|---|---|
| Extended product type | UVD 220/250VE1/6-T7-X1-T8-E1.2/6.2-XT7/M |
| Product type | Electronic time delay for under voltage release |
| Rated control voltage | 220–250 V AC/DC |
| AC control voltage | 220–250 V AC, 50 Hz |
| DC control voltage | 220–250 V DC |
| Voltage type | AC/DC |
| Time delay range | 0.5–3 s |
| Selectable delay settings | 0.5 / 1 / 1.5 / 2 / 3 s |
| Compatible platforms | E1–E6, T7/T7M, X1, T8, E1.2–E6.2, XT7/XT7M |
| Applicable product families | SACE Emax, Emax 2, Emax X1, Tmax T, Tmax XT |
| Standard | IEC |
| ETIM classification | EC002052 – Time delay under voltage release |
| Dimensions (W × H × D) | 150 × 60 × 200 mm |
| Net weight | 0.246 kg |
| EAN | 8015644383206 |
| Minimum order quantity | 1 piece |
| Customs tariff number | 85389099 |
Frequently Asked Questions
What is the ABB 1SDA038320R1 used for?
The ABB 1SDA038320R1 is an electronic time delay unit for an under voltage release, allowing compatible ABB circuit breakers to tolerate short voltage dips before the under voltage release initiates tripping.
What control voltage does the ABB 1SDA038320R1 require?
The electronic time delay unit is rated for a 220–250 V AC/DC control supply.
What delay times can be selected on the 1SDA038320R1?
The unit provides selectable delay settings of 0.5, 1, 1.5, 2 and 3 s, giving an overall timing range of 0.5–3 s.
Why use a time delay with an under voltage release?
A time delay allows the circuit breaker to ride through brief voltage dips instead of opening immediately, while still permitting the under voltage release to trip the breaker if the abnormal voltage condition continues beyond the selected delay.
Which ABB circuit breaker ranges can use the 1SDA038320R1?
The 1SDA038320R1 supports compatible breakers across the ABB SACE Emax, Emax 2, Emax X1, Tmax T and Tmax XT platforms, including E1–E6, T7/T7M, X1, T8, E1.2–E6.2 and XT7/XT7M applications.
Trusted ABB Circuit Breaker Accessories
ABB electronic under voltage delay accessories provide controlled circuit breaker operation during temporary voltage disturbances, helping industrial power distribution systems combine dependable protection with improved continuity of supply.
