Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
1SDA054286R1 ABB T4L 250 TMA 250-2500 4p F F InN=100%In Moulded Case Circuit Breaker
ABB 1SDA054286R1 SACE Tmax T4L 250 four-pole fixed moulded case circuit breaker with a 250 A TMA thermomagnetic trip unit, 2500 A magnetic protection and a 100% rated neutral.
£2,557.91
Why Choose the ABB T4L 250 TMA 250-2500 4p F F InN=100%In?
The ABB T4L 250 TMA 250-2500 4p F F InN=100%In, order code 1SDA054286R1, is a high-performance moulded case circuit breaker (MCCB) designed for reliable protection and switching in low-voltage power distribution systems. As part of the ABB SACE Tmax T4 series, it combines a 250 A rated current with a thermomagnetic TMA trip unit and four-pole construction for comprehensive protection of three-phase systems with neutral.
The integrated TMA thermomagnetic trip unit provides thermal overload and magnetic short-circuit protection without requiring an external power supply. Its magnetic protection is rated up to 2500 A, helping the circuit breaker respond rapidly to severe fault currents while providing dependable overload protection during normal operation.
This T4L version is supplied as a four-pole fixed circuit breaker with front terminals, making it suitable for integration into low-voltage switchboards and distribution panels. The neutral pole is rated at 100% of the phase current, making the breaker particularly suitable for installations where full neutral conductor capacity and four-pole isolation are required.
Key Advantages
- High-performance ABB SACE Tmax T4 moulded case circuit breaker.
- 250 A rated current for industrial and commercial power distribution.
- TMA thermomagnetic trip unit provides overload and short-circuit protection.
- Magnetic short-circuit protection rated up to 2500 A.
- Four-pole configuration provides switching and protection for three phases and neutral.
- Neutral rated at 100% of phase current for full-capacity neutral applications.
- Fixed installation with front terminals for straightforward switchboard integration.
Key Features
- ABB SACE Tmax T4L 250 series.
- 250 A rated current.
- Four-pole configuration.
- TMA thermomagnetic trip unit.
- Thermal overload and magnetic short-circuit protection.
- 2500 A magnetic protection rating.
- Neutral conductor rating: 100% In.
- Fixed circuit breaker execution.
- Front main-circuit terminals.
- Designed for low-voltage power distribution and circuit protection.
Reliable Thermomagnetic Protection for Power Distribution
Moulded case circuit breakers such as the ABB SACE Tmax T4 protect low-voltage distribution systems against overload and short-circuit conditions. The thermomagnetic release combines a thermal element for sustained overload protection with a magnetic element designed to respond rapidly when severe short-circuit currents occur.
The four-pole configuration of the 1SDA054286R1 enables simultaneous switching of all three phase conductors and the neutral. With the neutral rated at 100% of the phase current, this breaker is well suited to distribution systems where the neutral can carry significant current and complete four-pole isolation is required.
Typical Applications
- Industrial low-voltage distribution switchboards.
- Commercial building electrical distribution systems.
- Four-wire three-phase power distribution networks.
- Manufacturing and process plant switchgear.
- Main and sub-distribution circuits.
- Electrical control panels and machinery distribution systems.
- Infrastructure and utility electrical installations.
Technical Specifications
| Series | SACE Tmax T4 |
|---|---|
| Order code / MPN | 1SDA054286R1 |
| Product group | Tmax T4 - T8 |
| Product type | Moulded case circuit breaker |
| Frame | T4 250 |
| Performance level | L |
| Rated current | 250 A |
| Number of poles | 4 |
| Trip unit | TMA |
| Trip unit type | Thermomagnetic |
| Protection | Thermal overload and magnetic short-circuit protection |
| Magnetic protection rating | 2500 A |
| Neutral rating (InN) | 100% In |
| Mounting type | Fixed |
| Terminal position | Front |
Frequently Asked Questions
What is the ABB 1SDA054286R1 used for?
The ABB 1SDA054286R1 is a four-pole moulded case circuit breaker designed to provide overload and short-circuit protection in low-voltage industrial and commercial power distribution systems.
What is the rated current of the ABB T4L 250 1SDA054286R1?
The circuit breaker has a rated current of 250 A and is equipped with an ABB TMA thermomagnetic trip unit.
What protection does the TMA trip unit provide?
The TMA thermomagnetic trip unit provides thermal overload protection and magnetic short-circuit protection, with this version having a magnetic protection rating of 2500 A.
What does InN=100%In mean on the ABB T4L 250?
InN=100%In means the neutral pole is rated for 100% of the circuit breaker's phase current, giving this 250 A breaker a full-capacity neutral configuration.
How is the ABB 1SDA054286R1 installed?
The 1SDA054286R1 is a four-pole fixed circuit breaker with front terminals, designed for integration into compatible low-voltage switchboards and electrical distribution assemblies.
Trusted for Low-Voltage Power Distribution
ABB SACE Tmax moulded case circuit breakers provide dependable circuit protection for industrial, commercial and infrastructure power distribution systems, combining robust switching performance with proven thermomagnetic protection technology.
