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1SDA068225R1 ABB XT3S 250 TMD 125-1250 4P MCCB InN=50%
ABB 1SDA068225R1 XT3S 250 is a 125 A four-pole fixed moulded case circuit breaker with a TMD thermomagnetic trip unit, front terminals and 50% neutral protection for low-voltage distribution systems.
£726.82
Why Choose the ABB XT3S 250 TMD 125-1250 4p F F InN=50% Circuit Breaker?
The ABB XT3S 250 TMD 125-1250 4p F F InN=50%, order code 1SDA068225R1, is a four-pole moulded case circuit breaker (MCCB) from the ABB SACE Tmax XT range, designed for reliable protection and isolation in low-voltage electrical distribution systems. Built on the XT3 250 A frame, it combines dependable switching performance with a thermomagnetic trip unit for overload and short-circuit protection.
This XT3S circuit breaker incorporates an ABB TMD thermomagnetic trip unit with a rated current of 125 A and magnetic protection identified by the 125–1250 A configuration. Its four-pole arrangement includes 50% neutral protection (InN=50%), making it suitable for three-phase systems where switching and protection of the neutral conductor are required.
The breaker is supplied in a fixed (F) execution with front (F) terminals. The XT3S performance level provides a 50 kA breaking-capacity class within the Tmax XT family, making this model well suited to industrial, commercial and infrastructure distribution boards requiring robust circuit protection in a compact MCCB format.
Key Advantages
- Robust ABB SACE Tmax XT3S moulded case circuit breaker for low-voltage distribution.
- 125 A rated current on the XT3 250 A frame.
- TMD thermomagnetic protection for overload and short-circuit faults.
- Four-pole configuration with 50% neutral protection.
- 125–1250 A trip configuration for dependable circuit protection.
- Fixed execution with front terminals for conventional switchboard installation.
Key Features
- ABB SACE Tmax XT series.
- XT3S 250 frame and performance level.
- 125 A rated current.
- TMD thermomagnetic trip unit.
- 125–1250 A protection configuration.
- 4-pole configuration.
- Neutral protection: InN=50%.
- Fixed mounting with front terminals.
- 50 kA breaking-capacity class for the XT3S range.
Reliable Thermomagnetic Protection for Low-Voltage Distribution
Moulded case circuit breakers protect electrical distribution circuits against overloads and short circuits while also providing a means of circuit isolation. The TMD thermomagnetic trip unit used in this ABB Tmax XT3S combines thermal overload protection with magnetic operation for high-current fault conditions, providing dependable protection without requiring an electronic trip unit.
The four-pole XT3S configuration is particularly useful in three-phase distribution systems where the neutral conductor must also be switched and protected. With 50% neutral protection, a fixed installation format and front terminals, the 1SDA068225R1 is suited to structured switchboard and distribution-panel installations across industrial and commercial facilities.
Typical Applications
- Industrial low-voltage distribution boards.
- Commercial electrical switchboards.
- Three-phase circuits requiring neutral switching and protection.
- Machine and production-line power distribution.
- Infrastructure and building-services electrical systems.
- Feeder and sub-distribution circuit protection.
Technical Specifications
| Series | SACE Tmax XT |
|---|---|
| ABB order code | 1SDA068225R1 |
| Product type | Moulded case circuit breaker (MCCB) |
| Frame | XT3 250 |
| Performance level | S |
| Frame current | 250 A |
| Rated current | 125 A |
| Trip unit | TMD thermomagnetic |
| Trip configuration | 125–1250 A |
| Number of poles | 4 |
| Neutral protection | 50% (InN=50%) |
| Execution | Fixed |
| Terminal type | Front terminals |
| Breaking-capacity class | 50 kA |
Frequently Asked Questions
What is the ABB XT3S 250 TMD 125-1250 1SDA068225R1 used for?
It is a moulded case circuit breaker designed to protect low-voltage electrical distribution circuits against overload and short-circuit conditions.
What is the rated current of ABB 1SDA068225R1?
The circuit breaker has a rated current of 125 A and uses the ABB Tmax XT3 250 A frame.
What type of trip unit does this XT3S circuit breaker use?
It uses an ABB TMD thermomagnetic trip unit, providing thermal overload and magnetic short-circuit protection.
What does InN=50% mean on this ABB circuit breaker?
InN=50% indicates that the neutral pole is configured with protection at 50% of the phase rated-current setting.
How many poles does the ABB XT3S 1SDA068225R1 have?
This model has a four-pole configuration, allowing all three phase conductors and the neutral conductor to be switched.
How is the ABB 1SDA068225R1 installed?
This version is supplied as a fixed circuit breaker with front terminals, making it suitable for permanent installation in compatible low-voltage switchboards and distribution panels.
Trusted by Electrical Distribution Professionals Worldwide
ABB SACE Tmax XT moulded case circuit breakers are widely used in industrial, commercial and infrastructure electrical systems to provide dependable circuit protection, flexible installation and reliable low-voltage power distribution.
