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1sda054292r1 t4s 320 tma 320-3200 4 pole abb mccb
ABB 1SDA054292R1 SACE Tmax T4S 320 A four-pole moulded case circuit breaker with TMA thermomagnetic release, fully rated neutral and fixed front terminals for low voltage power distribution.
Why Choose the ABB 1SDA054292R1 Tmax T4S Moulded Case Circuit Breaker?
The ABB 1SDA054292R1 is a high-performance Tmax T4S moulded case circuit breaker (MCCB) designed to provide dependable protection for low voltage electrical distribution systems. As part of the trusted ABB SACE Tmax T series, this four-pole circuit breaker delivers reliable overload and short-circuit protection for industrial, commercial and OEM applications.
Featuring a TMA thermomagnetic trip unit, the breaker combines thermal overload protection with adjustable magnetic short-circuit protection. Its fully rated neutral (InN = 100% In) configuration makes it ideal for four-pole installations where complete neutral protection and isolation are required.
With a 320 A rated current, fixed front terminals and operation up to 690 V AC, the ABB 1SDA054292R1 is suitable for switchboards, distribution panels, motor control centres and industrial machinery requiring reliable ABB circuit protection.
Key Advantages
- Reliable ABB SACE Tmax T4S moulded case circuit breaker.
- 320 A rated current for demanding industrial power distribution.
- Four-pole design with fully rated neutral.
- TMA thermomagnetic trip unit providing overload and short-circuit protection.
- 50 kA breaking capacity at 400 V AC.
- Fixed front terminal design for straightforward panel installation.
Key Features
- ABB SACE Tmax T series.
- T4S 320 frame size.
- 320 A rated current.
- Four-pole MCCB configuration.
- Fully rated neutral: InN = 100% In.
- TMA thermomagnetic release.
- Adjustable magnetic setting from 1600 to 3200 A.
- Fixed version with front terminal connections.
Reliable Protection for Low Voltage Power Distribution
The ABB Tmax T4S series is engineered to protect electrical systems against overloads and short-circuit faults while maintaining reliable operation under demanding industrial conditions. Fast fault interruption helps minimise equipment damage, improve safety and reduce costly downtime.
Its fully rated neutral configuration makes this breaker suitable for modern four-pole electrical systems where the neutral conductor requires the same level of protection as the phase conductors, making it ideal for industrial plants, commercial buildings and OEM machinery.
Typical Applications
- Industrial low voltage power distribution.
- Electrical switchboards and distribution panels.
- Commercial building electrical installations.
- Motor control centres.
- OEM machinery and automation systems.
- Feeder and sub-distribution circuit protection.
Technical Specifications
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| Current | 320 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 4-pole | |
| Device Type | MCCB | |
| Breaking Capacity | 50 kA | |
| Trip Unit | Thermal-magnetic | |
| Manufacturer | ABB | |
| Series | SACE Tmax T | |
| Model | T4S 320 TMA 320-3200 4P F F InN=100%In | |
| Product code | 1SDA054292R1 | |
| Product type | Moulded Case Circuit Breaker | |
| Rated current (In) | 320 A | |
| Rated uninterrupted current (Iu) | 320 A | |
| Number of poles | 4 | |
| Neutral rating | Fully rated neutral, InN = 100% In | |
| Trip unit | TMA thermomagnetic release | |
| Magnetic adjustment range | 1600-3200 A | |
| Rated operational voltage | 690 V AC / 750 V DC | |
| Rated insulation voltage (Ui) | 1000 V | |
| Rated impulse withstand voltage (Uimp) | 8 kV | |
| Rated ultimate breaking capacity (Icu) | 50 kA at 400 V AC | |
| Rated service breaking capacity (Ics) | 50 kA at 400 V AC | |
| Terminal type | Fixed front terminals | |
| Standards | IEC 60947 | |
| Dimensions (H × W × D) | approx. 205 × 140 × 103.5 mm | |
| Weight | approx. 3.05 kg |
Frequently Asked Questions
What is the ABB 1SDA054292R1 used for?
This moulded case circuit breaker protects low voltage electrical systems against overloads and short-circuit faults in industrial and commercial installations.
What is the rated current of this breaker?
The ABB 1SDA054292R1 has a 320 A rated current.
How many poles does this MCCB have?
This model is a four-pole moulded case circuit breaker with a fully rated neutral.
What does InN = 100% In mean?
It means the neutral pole is rated at the same current as the phase poles, providing full neutral protection and isolation.
What type of trip unit is fitted?
The breaker is fitted with a TMA thermomagnetic release providing thermal overload protection together with adjustable magnetic short-circuit protection.
Trusted by Electrical Professionals Worldwide
ABB SACE Tmax moulded case circuit breakers are trusted worldwide for dependable circuit protection, long service life and proven performance across industrial, commercial and OEM electrical installations.
