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ABB MCCB 1sda054179r1-t4n 250 tma 250-2500 3 pole
ABB 1SDA054179R1 Tmax T4N 250 moulded case circuit breaker with TMA thermomagnetic trip unit, 250 A rated current, adjustable magnetic trip from 1250 to 2500 A, three-pole fixed configuration and front terminals.
Why Choose the ABB 1SDA054179R1 Tmax T4N 250 MCCB?
The ABB 1SDA054179R1 is a reliable Tmax T4N moulded case circuit breaker (MCCB) designed to provide dependable protection for low voltage power distribution systems. As part of the proven ABB SACE Tmax T series, this fixed three-pole breaker is engineered for industrial, commercial and OEM applications where safe circuit protection and long-term reliability are essential.
This MCCB is fitted with a TMA thermomagnetic trip unit, combining thermal overload protection with adjustable magnetic short-circuit protection. With a 250 A rated current and an adjustable magnetic trip range of 1250 to 2500 A, it is suitable for protecting feeders, distribution circuits, machinery and electrical panels.
Featuring a T4N 250 frame, three-pole fixed configuration and front terminal connections, the ABB 1SDA054179R1 is ideal for switchboards, motor control centres, OEM machinery panels and commercial power distribution systems requiring robust, dependable circuit protection.
Key Advantages
- Reliable ABB Tmax T4N moulded case circuit breaker.
- TMA thermomagnetic trip unit for overload and short-circuit protection.
- 250 A rated current for demanding low voltage distribution systems.
- Adjustable magnetic trip range of 1250 to 2500 A.
- Three-pole fixed configuration with front terminal connections.
- Suitable for industrial, commercial and OEM electrical applications.
Key Features
- ABB SACE Tmax T series.
- T4N 250 MCCB frame.
- 3-pole fixed circuit breaker.
- TMA thermomagnetic release.
- 250 A rated current.
- Magnetic trip setting: 1250 to 2500 A.
- Front terminal connections.
- Rated operational voltage up to 690 V AC.
Reliable Thermomagnetic Circuit Protection
The ABB Tmax T4N range protects low voltage electrical installations against overloads and short circuits using proven thermomagnetic technology. The TMA release provides dependable protection while allowing the magnetic trip setting to be matched to the requirements of the installation.
The ABB 1SDA054179R1 combines compact dimensions, robust construction and proven ABB engineering, making it a practical choice for protecting feeders, machinery, switchboards and distribution equipment in demanding applications.
Typical Applications
- Industrial switchboards.
- Commercial electrical distribution systems.
- Motor control centres.
- Transformer and feeder protection.
- Generator installations.
- OEM machinery panels.
- Infrastructure and utilities.
Technical Specifications
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| Current | 250 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | MCCB | |
| Breaking Capacity | 36 kA | |
| Trip Unit | Thermal-magnetic | |
| Manufacturer | ABB | |
| Series | SACE Tmax T | |
| Model | T4N 250 | |
| Part number | 1SDA054179R1 | |
| Product type | Moulded case circuit breaker (MCCB) | |
| Rated current (In) | 250 A | |
| Frame size | 250 A | |
| Trip unit | TMA thermomagnetic release | |
| Magnetic trip range | 1250 to 2500 A | |
| Rated operational voltage | 690 V AC | |
| Rated insulation voltage (Ui) | 1000 V | |
| Rated impulse withstand voltage (Uimp) | 8 kV | |
| Number of poles | 3 | |
| Mounting type | Fixed | |
| Terminal type | Front terminals | |
| Breaking capacity | 36 kA at 415 V AC | |
| Dimensions (H × W × D) | approx. 205 × 105 × 103.5 mm | |
| EAN | 8015644552794 | |
| Standards | IEC 60947 |
Frequently Asked Questions
What is the ABB 1SDA054179R1 used for?
It is used to protect low voltage electrical systems against overloads and short circuits in industrial, commercial and OEM applications.
What trip unit is fitted?
The breaker is fitted with a TMA thermomagnetic trip unit.
What is the rated current?
The ABB 1SDA054179R1 has a rated current of 250 A with an adjustable magnetic trip range of 1250 to 2500 A.
How many poles does this MCCB have?
The ABB 1SDA054179R1 is supplied in a 3-pole fixed configuration.
Where is this breaker typically installed?
It is commonly installed in switchboards, motor control centres and industrial power distribution panels.
Trusted by Electrical Professionals Worldwide
ABB SACE Tmax moulded case circuit breakers are trusted by panel builders, electrical contractors and industrial engineers worldwide for dependable low voltage protection, excellent reliability and long operational life.
