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1sda054276r1 t4s 250 tma 160-1600 4 pole abb mccb
ABB 1SDA054276R1 SACE Tmax T4S 160 A four-pole moulded case circuit breaker with TMA thermomagnetic release, fully rated neutral and fixed front terminals for low voltage distribution.
£1,549.36
Why Choose the ABB 1SDA054276R1 Tmax T4S Moulded Case Circuit Breaker?
The ABB 1SDA054276R1 is a dependable Tmax T4S moulded case circuit breaker (MCCB) engineered to protect low voltage electrical distribution systems against overloads and short-circuit faults. As part of the trusted ABB SACE Tmax T series, this four-pole circuit breaker combines proven reliability, high breaking performance and compact installation for demanding industrial and commercial applications.
Equipped with a TMA thermomagnetic trip unit, the breaker provides precise thermal overload protection together with adjustable magnetic short-circuit protection. Its fully rated neutral (InN = 100% In) design makes it particularly suitable for four-pole distribution systems where complete neutral protection and isolation are required.
With a 160 A rated current, 250 A frame size and fixed front terminals, the ABB 1SDA054276R1 offers reliable circuit protection for switchboards, machinery, motor control centres and OEM electrical equipment operating on systems up to 690 V AC.
Key Advantages
- Reliable ABB SACE Tmax T4S moulded case circuit breaker.
- 160 A rated current for industrial and commercial distribution systems.
- Four-pole design with fully rated neutral.
- TMA thermomagnetic trip unit with adjustable magnetic protection.
- 50 kA breaking capacity at 400 V AC.
- Compact fixed front terminal design for straightforward installation.
Key Features
- ABB SACE Tmax T series.
- T4S 250 frame size.
- 160 A rated current.
- Four-pole MCCB configuration.
- Fully rated neutral: InN = 100% In.
- Thermomagnetic TMA release.
- Magnetic adjustment range from 800 to 1600 A.
- Fixed version with front terminals.
Reliable Protection for Low Voltage Power Distribution
The ABB Tmax T4S series is designed to deliver dependable protection for electrical distribution systems by interrupting overload and short-circuit faults quickly and safely. This helps minimise equipment damage, improve operational safety and reduce costly downtime.
Its fully rated neutral configuration makes this breaker especially suitable for installations with significant neutral currents, including commercial buildings, industrial facilities and OEM machinery where complete neutral isolation is required.
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
Tick the specs you need, then view products that match.
| Current | 160 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 250 TMA 160-1600 4P F F InN=100%In | |
| Product code | 1SDA054276R1 | |
| Product type | Moulded Case Circuit Breaker | |
| Rated current (In) | 160 A | |
| Rated uninterrupted current (Iu) | 250 A | |
| Number of poles | 4 | |
| Neutral rating | Fully rated neutral, InN = 100% In | |
| Trip unit | TMA thermomagnetic release | |
| Magnetic adjustment range | 800-1600 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 1SDA054276R1 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 1SDA054276R1 has a 160 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 has the same current rating as the phase poles, providing full neutral protection and isolation in four-pole systems.
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 reliable circuit protection, long service life and dependable performance across industrial, commercial and OEM electrical installations.
