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1SDA054483R1 ABB T5L 400 TMA 320-3200 4P F F InN=100%In Moulded Case Circuit Breaker 320 A
ABB 1SDA054483R1 T5L 400 TMA is a 320 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 320-3200 4P F F InN=100%In Circuit Breaker?
The ABB 1SDA054483R1 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 320 A TMA thermomagnetic trip unit.
The TMA thermomagnetic release provides adjustable thermal overload protection from 224–320 A together with adjustable instantaneous magnetic short-circuit protection from 1,600–3,200 A. This provides useful flexibility when coordinating the breaker with cables, feeders and connected electrical equipment.
The fourth pole features a fully rated neutral at 100% of In, making the breaker suitable for four-wire distribution systems where the neutral requires full-current protection. 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 integration into low-voltage switchboards.
Key Advantages
- High-performance ABB SACE Tmax T5L moulded case circuit breaker.
- 320 A TMA thermomagnetic release for distribution circuit protection.
- Four-pole configuration for three-phase and neutral distribution systems.
- 100% rated neutral for full-current neutral protection.
- Adjustable thermal overload protection from 224–320 A.
- Adjustable instantaneous magnetic protection from 1,600–3,200 A.
- Ultimate short-circuit breaking capacity of 120 kA at 380–415 V AC.
- Fixed construction with front terminals for switchboard integration.
Key Features
- ABB SACE Tmax T5 series.
- T5L 400 frame with L short-circuit performance level.
- 320 A rated trip-unit current.
- 400 A rated uninterrupted frame current.
- 4-pole circuit breaker configuration.
- Neutral rating: 100% of In.
- TMA thermomagnetic trip unit.
- Adjustable thermal overload and instantaneous magnetic protection.
- 120 kA Icu at 380–415 V AC.
- 690 V AC / 750 V DC rated operational voltage.
- 1,000 V rated insulation voltage.
- Fixed installation with 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 1SDA054483R1, the thermal threshold can be adjusted between 224–320 A, while the instantaneous magnetic threshold can be set between 1,600–3,200 A, supporting effective coordination with the protected distribution circuit.
The four-pole configuration incorporates a 100% rated neutral, allowing the neutral pole to carry and protect the full rated current of the trip unit. Combined with a 120 kA ultimate breaking capacity at 380–415 V AC, this makes the breaker 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 | 1SDA054483R1 |
| Product group | 310511-T-Max T4 - T8 |
| Product type | Moulded case circuit breaker (MCCB) |
| Frame | T5 400 |
| Performance level | L |
| Rated current (In) | 320 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 | 224–320 A |
| Instantaneous magnetic adjustment | 1,600–3,200 A |
| Rated operational voltage | 690 V AC / 750 V DC |
| Rated insulation voltage (Ui) | 1,000 V |
| Rated impulse withstand voltage (Uimp) | 8 kV |
| 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 |
| Electrical durability | 7,000 operating cycles |
| Mechanical durability | 20,000 operating cycles |
| Power loss | 13.6 W per pole at rated operating conditions |
| Dimensions (H × W × D) | 205 × 186 × 103.5 mm |
| Net weight | 5.8 kg |
| EAN | 8015644555801 |
Frequently Asked Questions
What is the ABB 1SDA054483R1 used for?
The ABB 1SDA054483R1 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 1SDA054483R1?
The breaker uses a 320 A TMA thermomagnetic release within the T5L 400 frame, which has a rated uninterrupted current of 400 A.
What does InN=100%In mean on the ABB 1SDA054483R1?
InN=100%In means the neutral pole is fully rated at 100% of the trip-unit rated current, providing full-current neutral protection in four-wire distribution systems.
What adjustment ranges does the TMA trip unit provide?
The TMA release provides adjustable thermal overload protection from 224–320 A and adjustable instantaneous magnetic short-circuit protection from 1,600–3,200 A.
What breaking capacity does the ABB 1SDA054483R1 provide?
The T5L circuit breaker provides an ultimate short-circuit breaking capacity of 120 kA at 380–415 V AC, with higher or lower breaking capacities at other operating voltages.
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.
