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1SDA054254R1 ABB T4V 250 TMD 50-500 4-Pole MCCB
ABB 1SDA054254R1 is a T4V 250 fixed four-pole moulded case circuit breaker with a 50 A TMD thermal-magnetic release, 500 A fixed magnetic protection and 200 kA breaking capacity at 380/415 V AC for demanding low-voltage power distribution systems.
£1,410.48
Why Choose the ABB 1SDA054254R1 T4V 250 Moulded Case Circuit Breaker?
The ABB 1SDA054254R1, designated T4V 250 TMD 50-500 4p F F, is a high-performance moulded case circuit breaker (MCCB) designed for dependable protection of low-voltage power distribution systems. Part of the ABB SACE Tmax T4 series, it combines a compact 250 A frame, thermal-magnetic protection and exceptionally high short-circuit interruption capability for demanding industrial and commercial installations.
This circuit breaker incorporates an ABB TMD thermal-magnetic release rated at 50 A. The thermal overload element is adjustable from 0.7–1 × In, while the magnetic short-circuit element is fixed at 500 A, providing straightforward protection against sustained overloads and severe short-circuit faults.
The T4V 250 is supplied as a fixed four-pole circuit breaker with front terminals. Its V performance level delivers an ultimate short-circuit breaking capacity of 200 kA at 380/415 V AC, making the 1SDA054254R1 particularly suitable for distribution systems where very high prospective fault currents must be safely interrupted.
Key Advantages
- High-performance ABB SACE Tmax T4V moulded case circuit breaker.
- 50 A TMD thermal-magnetic release provides overload and short-circuit protection.
- Thermal overload setting is adjustable from 0.7–1 × In.
- 500 A fixed magnetic protection provides rapid response to severe short circuits.
- Exceptional 200 kA ultimate breaking capacity at 380/415 V AC.
- Four-pole fixed configuration with front terminals supports practical switchboard integration.
Key Features
- ABB SACE Tmax T4V 250 series.
- 250 A rated uninterrupted current frame.
- 50 A TMD thermal-magnetic release.
- Adjustable thermal overload protection from 0.7–1 × In.
- 500 A fixed magnetic short-circuit protection.
- Four-pole circuit breaker configuration.
- Fixed mounting construction.
- Front terminals for main circuit connections.
- V short-circuit performance level.
- 200 kA Icu at 380/415 V AC.
Reliable Thermal-Magnetic Protection for Power Distribution
Thermal-magnetic moulded case circuit breakers such as the ABB T4V 250 combine two complementary protection principles. The thermal element responds to sustained overload currents that could overheat conductors and connected equipment, while the magnetic element operates rapidly when a severe short-circuit fault produces a high current.
For the 1SDA054254R1, the 50 A TMD release provides an adjustable thermal setting from 0.7–1 × In together with 500 A fixed magnetic protection. Combined with four-pole construction and 200 kA breaking capacity at 380/415 V AC, this makes the breaker a robust choice for demanding low-voltage switchboards and distribution assemblies.
Typical Applications
- Industrial low-voltage power distribution systems.
- Main and feeder protection in electrical switchboards.
- Three-phase four-wire distribution systems.
- Manufacturing and process plant electrical systems.
- Commercial building power distribution.
- Installations with very high prospective short-circuit currents.
Technical Specifications
| Series | SACE Tmax T4 |
|---|---|
| ABB order code | 1SDA054254R1 |
| Product group | 310511-T-Max T4 - T8 |
| Product type | Moulded case circuit breaker (MCCB) |
| Frame | T4V 250 |
| Rated uninterrupted current | 250 A |
| Trip-unit rated current | 50 A |
| Trip unit | TMD thermal-magnetic release |
| Thermal overload adjustment | 0.7–1 × In |
| Magnetic short-circuit protection | 500 A fixed |
| Protection functions | Thermal overload and magnetic short-circuit protection |
| Number of poles | 4 |
| Rated operational voltage | 690 V AC |
| Ultimate short-circuit breaking capacity | 200 kA at 220/230 V AC |
| Short-circuit performance level | V |
| Mounting | Fixed |
| Terminal arrangement | Front terminals |
| Dimensions (H × W × D) | 205 × 140 × 103.5 mm |
| Product net weight | 3.05 kg |
| EAN | 8015644553517 |
Frequently Asked Questions
What is the ABB 1SDA054254R1 used for?
The ABB 1SDA054254R1 is a four-pole moulded case circuit breaker designed to protect low-voltage distribution circuits against overload and short-circuit conditions.
What is the rated current of the ABB 1SDA054254R1?
The circuit breaker has a 250 A frame and is equipped with a 50 A TMD thermal-magnetic release.
What does TMD 50-500 mean on this ABB circuit breaker?
The designation identifies a 50 A TMD thermal-magnetic release with 500 A fixed magnetic short-circuit protection.
Is the thermal protection adjustable on the ABB 1SDA054254R1?
Yes. The thermal overload protection is adjustable from 0.7–1 × In, allowing the overload threshold to be matched to the protected circuit.
What is the breaking capacity of the ABB 1SDA054254R1?
The T4V 250 provides an ultimate short-circuit breaking capacity of 200 kA at 380/415 V AC, with breaking performance varying according to system voltage.
How many poles does the ABB 1SDA054254R1 have?
The 1SDA054254R1 is a four-pole MCCB, providing switching across four conductors in suitable low-voltage distribution systems.
How is the ABB 1SDA054254R1 installed?
This model has a fixed mounting configuration with front terminals, making it suitable for permanent integration into electrical switchboards and distribution assemblies.
Trusted by Electrical Professionals Worldwide
ABB SACE Tmax moulded case circuit breakers provide dependable overcurrent protection, high short-circuit interruption capability and flexible integration for industrial and commercial low-voltage power distribution systems.
