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1SDA074746R1 ABB XT2N 125 TMA 125-625..1250 3P FF UL/CSA MCCB
ABB 1SDA074746R1 XT2N 125 is a 125 A three-pole fixed UL/CSA moulded case circuit breaker with front terminals, a TMA adjustable thermomagnetic release, a 625-1250 A instantaneous trip range and a 25 kA interrupting rating at 480 V AC.
£355.54
Why Choose the ABB XT2N 125 TMA 125-625..1250 3p FF UL/CSA Circuit Breaker?
The ABB XT2N 125 TMA 125-625..1250 3p FF UL/CSA, order code 1SDA074746R1, is a moulded case circuit breaker (MCCB) from the ABB SACE Tmax XT range. Built on the XT2 125 A frame, it incorporates a 125 A TMA adjustable thermomagnetic release for dependable overload and short-circuit protection in UL/CSA-oriented low-voltage distribution systems.
The TMA release combines adjustable thermal overload protection with adjustable instantaneous magnetic protection. ABB specifies an overload adjustment range of 87.5–125 A and an instantaneous short-circuit setting range of 625–1250 A, allowing the protection characteristics to be matched more closely to the requirements of the protected circuit.
The 1SDA074746R1 is supplied as a three-pole fixed circuit breaker with front terminals. Rated for 600 V AC, the XT2N provides a UL 489 interrupting rating of 25 kA at 480 V AC, making it a robust choice for industrial, commercial and OEM power-distribution equipment.
Key Advantages
- ABB SACE Tmax XT2N moulded case circuit breaker.
- 125 A TMA adjustable thermomagnetic release.
- Adjustable overload protection from 87.5–125 A.
- Adjustable instantaneous short-circuit protection from 625–1250 A.
- 25 kA interrupting rating at 480 V AC.
- Rated for operation at up to 600 V AC.
- Three-pole fixed construction with front terminals.
- Designed and certified to UL 489.
Key Features
- ABB SACE Tmax XT series.
- XT2 frame size.
- 125 A rated uninterrupted current.
- TMA thermomagnetic trip unit.
- 87.5–125 A thermal adjustment range.
- 625–1250 A instantaneous magnetic adjustment range.
- 3-pole configuration.
- Fixed execution.
- Front terminals.
- 600 V AC rated operational voltage.
- N performance: 25 kA at 480 V AC.
- UL 489 certification.
Adjustable Thermomagnetic Protection for Low-Voltage Distribution
The ABB TMA release combines adjustable thermal overload protection with adjustable magnetic short-circuit protection. On the 1SDA074746R1, the overload setting can be adjusted from 87.5–125 A, while the instantaneous magnetic threshold can be set between 625 A and 1250 A, providing useful flexibility when coordinating protection with connected conductors and equipment.
The XT2N platform combines this adjustable protection with compact dimensions and strong UL short-circuit performance. With a 125 A rating, three-pole fixed construction, front terminals and a 25 kA interrupting rating at 480 V AC, this breaker is well suited to industrial and commercial distribution equipment requiring reliable UL 489 circuit protection.
Typical Applications
- UL/CSA-oriented low-voltage distribution equipment.
- Industrial electrical distribution panels.
- Commercial building power distribution systems.
- Three-phase feeder and sub-distribution protection.
- Transformer and installation protection.
- Machine and equipment power-distribution panels.
- OEM switchboards and control-panel assemblies.
Technical Specifications
| Series | SACE Tmax XT |
|---|---|
| ABB order code | 1SDA074746R1 |
| Alternate catalogue number | XT2NU3125BFF000XXX |
| EAN / UPC | 8015644787233 |
| Product type | Moulded case circuit breaker (MCCB) |
| Frame | XT2 |
| Performance level | N |
| Rated current (In) | 125 A |
| Rated uninterrupted current (Iu) | 125 A |
| Trip unit | TMA adjustable thermomagnetic release |
| Overload protection setting range | 87.5–125 A |
| Instantaneous short-circuit setting (I3) | 625–1250 A |
| Number of poles | 3 |
| Execution | Fixed |
| Terminal type | Front terminals |
| Rated operational voltage | 600 V AC |
| UL 489 interrupting rating at 240 V AC | 65 kA |
| UL 489 interrupting rating at 480 V AC | 25 kA |
| UL 489 interrupting rating at 600 V AC | 18 kA |
| UL 489 interrupting rating at 250 V DC | 35 kA with 2 poles in series |
| UL 489 interrupting rating at 500 V DC | 35 kA with 3 poles in series |
| Dimensions (W × H × D) | 90 × 130 × 82.5 mm |
| Product net weight | 1.1 kg |
| Standard | UL 489 |
| Certification | UL |
Frequently Asked Questions
What is the ABB 1SDA074746R1?
It is an ABB SACE Tmax XT2N moulded case circuit breaker rated at 125 A with a TMA adjustable thermomagnetic release, three poles, fixed execution and front terminals.
What is the rated current of ABB 1SDA074746R1?
The circuit breaker has a rated current of 125 A and a rated uninterrupted current of 125 A.
What is the overload adjustment range of ABB 1SDA074746R1?
The TMA release provides an adjustable overload protection range of 87.5–125 A.
What is the instantaneous trip range of ABB 1SDA074746R1?
The instantaneous magnetic short-circuit setting can be adjusted from 625–1250 A.
What does TMA mean on the ABB XT2N circuit breaker?
TMA identifies an adjustable thermomagnetic trip unit providing adjustable thermal overload protection and adjustable magnetic short-circuit protection.
What is the interrupting rating of ABB 1SDA074746R1 at 480 V AC?
The XT2N has a UL 489 interrupting rating of 25 kA at 480 V AC.
How is ABB 1SDA074746R1 installed?
This model is a three-pole fixed circuit breaker with front terminals for integration into compatible low-voltage switchboards and distribution equipment.
Trusted by Electrical Distribution Professionals Worldwide
ABB SACE Tmax XT moulded case circuit breakers are widely used in industrial, commercial and OEM electrical systems to provide dependable circuit protection, compact installation and reliable low-voltage power distribution.
