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1SDA075256R1 ABB XT4H 250 TMA 250 1250..2500 4p FF UL/CSA Circuit Breaker
ABB 1SDA075256R1 XT4H 250 is a four-pole fixed UL/CSA moulded case circuit breaker with front terminals, a fully rated neutral, a 250 A TMA thermomagnetic release, adjustable 1250–2500 A instantaneous protection and a 65 kA interruption rating at 480 V AC.
£1,417.82
Why Choose the ABB XT4H 250 TMA 250 1250..2500 4p FF UL/CSA Circuit Breaker?
The ABB XT4H 250 TMA 250 1250..2500 4p FF UL/CSA, order code 1SDA075256R1, is a high-performance four-pole moulded case circuit breaker designed for overload and short-circuit protection in low-voltage electrical distribution systems. As part of the ABB SACE Tmax XT / T-Max XT 250 Range, it combines the compact XT4 frame with H-class interruption performance and adjustable thermomagnetic protection.
This circuit breaker incorporates an ABB TMA thermomagnetic release rated at 250 A. Its thermal overload setting is adjustable from 175–250 A, while the instantaneous magnetic short-circuit release is adjustable from 1250–2500 A, providing flexibility when coordinating protection with the connected circuit.
The XT4H 1SDA075256R1 features a four-pole fixed construction with front terminals, including a fully rated neutral, and is rated for 600 V AC. Its H-performance level provides an interruption rating of 65 kA at 480 V AC, making it suitable for demanding industrial and commercial distribution systems requiring UL/CSA circuit protection.
Key Advantages
- High-performance ABB SACE Tmax XT4 moulded case circuit breaker.
- 250 A TMA thermomagnetic release with adjustable protection settings.
- 175–250 A adjustable thermal overload setting.
- 1250–2500 A adjustable instantaneous magnetic trip.
- H-class 65 kA interruption rating at 480 V AC.
- Four-pole construction with fully rated neutral.
- Fixed mounting with front terminals for straightforward panel integration.
Key Features
- ABB SACE Tmax XT4H 250 frame.
- TMA thermomagnetic trip unit.
- 250 A rated current.
- 175–250 A adjustable overload protection.
- 1250–2500 A adjustable instantaneous short-circuit protection.
- Four-pole construction.
- Fully rated neutral pole.
- 600 V AC rated voltage.
- 65 kA interruption rating at 480 V AC.
- Fixed mounting with front terminals.
- UL/CSA configuration for North American electrical distribution applications.
High-Performance Adjustable Thermomagnetic Protection
The TMA thermomagnetic release provides adjustable overload and short-circuit protection using proven thermal and magnetic operating principles. Its thermal setting can be adjusted from 175 to 250 A, while the instantaneous magnetic element provides an adjustable 1250–2500 A trip range for rapid interruption of severe fault currents.
The ABB Tmax XT4H platform combines compact dimensions with high interruption capability. The four-pole fixed construction, fully rated neutral and front-terminal arrangement make the 1SDA075256R1 particularly suitable for distribution systems where all four conductors require a robust, integrated switching and protection solution.
Typical Applications
- Industrial low-voltage distribution boards.
- Commercial electrical switchboards.
- UL/CSA power distribution assemblies.
- High-fault-current feeder protection.
- Four-pole distribution and isolation circuits.
- Industrial machinery and OEM electrical panels.
Technical Specifications
| Series | SACE Tmax XT / T-Max XT 250 Range |
|---|---|
| ABB order code | 1SDA075256R1 |
| Alternate catalogue number | XT4HU4250BFF000XXX |
| Product type | Moulded case circuit breaker |
| Frame size | XT4 |
| Frame designation | XT4H 250 |
| Performance level | H |
| Trip unit | TMA thermomagnetic |
| Rated current | 250 A |
| Overload release adjustment | 175–250 A |
| Instantaneous magnetic trip | 1250–2500 A |
| Number of poles | 4 |
| Neutral | Fully rated |
| Rated voltage | 600 V AC |
| Interruption rating | H, 65 kA at 480 V AC |
| Mounting type | Fixed |
| Terminal type | Front terminals |
| Main-circuit connection | Bolt connection |
| Degree of protection | IP20 |
| Certification | UL / CSA |
| EAN / UPC | 8015644792336 |
Frequently Asked Questions
What is the ABB 1SDA075256R1 used for?
It is a four-pole moulded case circuit breaker designed to provide adjustable overload and short-circuit protection in low-voltage electrical distribution systems.
What is the rated current of the ABB XT4H 250 TMA 1SDA075256R1?
The TMA thermomagnetic release has a rated current of 250 A, with its thermal overload setting adjustable from 175–250 A.
What does 1250..2500 mean in the model designation?
It identifies the adjustable instantaneous magnetic short-circuit trip range of 1250–2500 A.
What is the interruption rating of ABB 1SDA075256R1?
The XT4H provides an H-class interruption rating of 65 kA at 480 V AC.
Does the ABB XT4H 1SDA075256R1 have a fully rated neutral?
Yes. This model is a four-pole breaker with a fully rated neutral, fixed mounting and front terminals.
Trusted ABB Circuit Protection
ABB SACE Tmax XT moulded case circuit breakers provide compact, dependable protection for industrial and commercial electrical distribution systems, with XT4H configurations delivering high interruption performance and flexible thermomagnetic protection for demanding applications.
