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1SDA054484R1 ABB T5L 400 TMA 400-4000 4P F F InN=100%In Moulded Case Circuit Breaker 400 A
ABB 1SDA054484R1 T5L 400 TMA is a 400 A four-pole fixed moulded case circuit breaker with front terminals, a fully rated neutral, adjustable thermomagnetic protection and a 120 kA ultimate breaking capacity at 380–415 V AC.
£3,630.52
Why Choose the ABB T5L 400 TMA 400-4000 4P F F InN=100%In Circuit Breaker?
The ABB 1SDA054484R1 is a high-performance SACE Tmax T5L moulded case circuit breaker (MCCB) designed for dependable overload and short-circuit protection in demanding industrial and commercial low-voltage power distribution systems. This fixed four-pole circuit breaker combines the ABB T5L 400 frame with a 400 A TMA thermomagnetic trip unit.
The TMA thermomagnetic release combines adjustable thermal overload protection with adjustable instantaneous magnetic short-circuit protection. Its thermal setting range is 280–400 A, while the magnetic trip threshold is adjustable from 2,000–4,000 A, allowing the breaker to be coordinated with feeders, cables and connected electrical equipment.
The fourth pole incorporates a fully rated neutral at 100% of In, making the breaker suitable for four-wire distribution systems where the neutral must carry and be protected at the full rated current. The T5L performance level provides an ultimate short-circuit breaking capacity of 120 kA at 380–415 V AC, while fixed mounting and front terminals support straightforward switchboard integration.
Key Advantages
- High-performance ABB SACE Tmax T5L moulded case circuit breaker.
- 400 A TMA thermomagnetic release for high-current distribution circuits.
- Four-pole configuration for three-phase and neutral electrical systems.
- 100% rated neutral for full-current neutral protection.
- Adjustable thermal overload protection from 280–400 A.
- Adjustable instantaneous magnetic protection from 2,000–4,000 A.
- Ultimate short-circuit breaking capacity of 120 kA at 380–415 V AC.
- Fixed construction with front terminals for straightforward switchboard integration.
Key Features
- ABB SACE Tmax T5 series.
- T5L 400 frame with L short-circuit performance level.
- 400 A rated current.
- 400 A rated uninterrupted current.
- 4-pole circuit breaker configuration.
- Neutral rating: 100% of In.
- TMA thermomagnetic trip unit.
- Adjustable thermal overload and instantaneous magnetic short-circuit protection.
- 120 kA Icu at 380–415 V AC.
- High breaking capacity across multiple low-voltage operating voltages.
- Fixed circuit-breaker construction.
- Front terminal connections.
Adjustable Thermomagnetic Protection with a Fully Rated Neutral
Thermomagnetic moulded case circuit breakers such as the ABB SACE Tmax T5L combine thermal overload protection with rapid magnetic short-circuit protection in a robust, self-powered design. On the 1SDA054484R1, the thermal threshold can be adjusted between 280–400 A, while the instantaneous magnetic threshold can be set between 2,000–4,000 A, providing useful flexibility when coordinating the breaker with the protected electrical circuit.
The four-pole configuration incorporates a 100% rated neutral, allowing the neutral pole to carry and protect the full rated current of the breaker. Combined with a 120 kA ultimate breaking capacity at 380–415 V AC, this makes the 1SDA054484R1 particularly suitable for demanding four-wire industrial and commercial distribution systems where both high fault-current performance and full neutral protection are required.
Typical Applications
- Industrial low-voltage power distribution systems.
- Main and sub-distribution switchboards.
- Four-wire three-phase feeder protection.
- Systems requiring a fully rated neutral conductor.
- Manufacturing and process plant electrical systems.
- Commercial building power distribution.
- Infrastructure and utility electrical installations.
- Installations with high prospective short-circuit currents.
Technical Specifications
| Series | SACE Tmax T5 |
|---|---|
| ABB order code | 1SDA054484R1 |
| Product group | 310511-T-Max T4 - T8 |
| Product type | Moulded case circuit breaker (MCCB) |
| Frame | T5 400 |
| Performance level | L |
| Rated current (In) | 400 A |
| Rated uninterrupted current (Iu) | 400 A |
| Number of poles | 4P |
| Neutral rating (InN) | 100% of In |
| Trip unit | TMA thermomagnetic release |
| Thermal overload adjustment | 280–400 A |
| Instantaneous magnetic adjustment | 2,000–4,000 A |
| Rated operational voltage | 690 V AC |
| Ultimate short-circuit breaking capacity (Icu) at 220–230 V AC | 200 kA |
| Ultimate short-circuit breaking capacity (Icu) at 380–415 V AC | 120 kA |
| Ultimate short-circuit breaking capacity (Icu) at 440 V AC | 100 kA |
| Ultimate short-circuit breaking capacity (Icu) at 500 V AC | 85 kA |
| Ultimate short-circuit breaking capacity (Icu) at 690 V AC | 70 kA |
| Rated short-time withstand current (Icw) | 5 kA for 1 s |
| Mounting type | Fixed |
| Terminal type | Front terminals |
| Dimensions (H × W × D) | 205 × 186 × 103.5 mm |
| Net weight | 5.8 kg |
| EAN | 8015644555818 |
| Standards | IEC |
Frequently Asked Questions
What is the ABB 1SDA054484R1 used for?
The ABB 1SDA054484R1 is a four-pole moulded case circuit breaker designed to provide adjustable thermomagnetic overload and short-circuit protection for demanding low-voltage distribution systems, including applications requiring a fully rated neutral.
What is the rated current of the ABB T5L 400 TMA 1SDA054484R1?
The circuit breaker has a rated current and rated uninterrupted current of 400 A and uses an ABB TMA thermomagnetic trip unit.
What does InN=100%In mean on the ABB 1SDA054484R1?
InN=100%In means the neutral pole is fully rated at 100% of the breaker's rated current, providing full-current neutral protection in four-wire distribution systems.
What adjustment ranges does the TMA trip unit provide?
The TMA trip unit provides adjustable thermal overload protection from 280–400 A and adjustable instantaneous magnetic short-circuit protection from 2,000–4,000 A.
What breaking capacity does the ABB 1SDA054484R1 provide?
The T5L circuit breaker provides an ultimate short-circuit breaking capacity of 120 kA at 380–415 V AC, with a breaking capacity of 200 kA at 220–230 V AC.
Trusted ABB Protection for Industrial Power Systems
ABB SACE Tmax moulded case circuit breakers provide dependable protection for low-voltage distribution systems, combining robust construction, adjustable thermomagnetic protection and high short-circuit interruption capability for demanding industrial, commercial and infrastructure applications.
