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1SDA054246R1 ABB T4V 250 TMA 80-800 80 A 3-Pole MCCB
ABB 1SDA054246R1 T4V 250 TMA 80-800 is an 80 A three-pole fixed moulded case circuit breaker with front terminals, adjustable thermomagnetic protection and a 200 kA ultimate short-circuit breaking capacity at 380–415 V AC.
£1,254.61
Why Choose the ABB T4V 250 TMA 80-800 Circuit Breaker?
The ABB T4V 250 TMA 80-800, order code 1SDA054246R1, is a high-performance 3-pole moulded case circuit breaker (MCCB) designed for protection and switching in low-voltage electrical distribution systems. Part of the proven ABB Tmax T4 series, it combines the T4V 250 frame with an 80 A TMA thermomagnetic trip unit for dependable protection of industrial and commercial power circuits.
The TMA thermomagnetic trip unit provides adjustable thermal overload and magnetic short-circuit protection without requiring an external power supply. Thermal protection is adjustable from 0.7 to 1 times the rated current, while magnetic protection is adjustable from 5 to 10 times the rated current, giving this model a magnetic trip adjustment range of 400–800 A.
With a rated current of 80 A and an ultimate short-circuit breaking capacity of 200 kA at 380–415 V AC, the T4V 250 provides exceptionally high fault-current interruption capability. Its 3-pole fixed construction with front terminals supports straightforward installation in switchboards, distribution panels and industrial electrical assemblies.
Key Advantages
- High-performance ABB Tmax T4 moulded case circuit breaker.
- 80 A rated current for industrial and commercial distribution circuits.
- 200 kA ultimate breaking capacity at 380–415 V AC for installations with very high prospective fault currents.
- TMA thermomagnetic release provides overload and short-circuit protection.
- Adjustable thermal protection from 0.7–1 × In.
- Adjustable magnetic protection from 5–10 × In.
- 400–800 A magnetic trip adjustment range.
- Fixed 3-pole construction with front terminals for convenient switchboard integration.
Key Features
- ABB Tmax T4V 250 circuit breaker.
- 80 A rated current.
- 250 A frame rated uninterrupted current.
- 3-pole configuration.
- Fixed mounting execution.
- Front terminals.
- TMA thermomagnetic trip unit.
- Adjustable thermal overload protection.
- 400–800 A adjustable magnetic short-circuit protection.
- 200 kA Icu at 380–415 V AC.
High-Performance Thermomagnetic Circuit Protection
Moulded case circuit breakers such as the ABB Tmax T4 protect electrical installations by automatically interrupting excessive currents caused by overloads and short circuits. The T4V performance level combines compact construction with very high short-circuit interruption capability, making it particularly suitable for demanding industrial distribution systems.
The TMA release combines adjustable thermal overload protection with adjustable magnetic short-circuit protection. This allows the protection characteristics to be coordinated with the connected circuit while retaining the simplicity and reliability of a self-powered thermomagnetic protection system.
Typical Applications
- Industrial low-voltage distribution boards.
- Main and feeder circuit protection.
- Manufacturing and process plant electrical systems.
- Commercial and infrastructure switchboards.
- Machinery and automation power distribution.
- Circuits requiring adjustable thermomagnetic protection.
- Installations with very high prospective short-circuit currents.
Technical Specifications
| Series | Tmax T4 |
|---|---|
| Manufacturer reference | T4V250R80 |
| ABB order code | 1SDA054246R1 |
| EAN | 8015644553432 |
| Product type | Moulded case circuit breaker (MCCB) |
| Frame | T4 |
| Performance level | V |
| Frame rated uninterrupted current (Iu) | 250 A |
| Rated current (In) | 80 A |
| Trip unit | TMA thermomagnetic |
| Thermal protection setting | 0.7–1 × In |
| Magnetic protection setting | 5–10 × In |
| Magnetic trip adjustment range | 400–800 A |
| Number of poles | 3 |
| 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 | 200 kA |
| Ultimate short-circuit breaking capacity (Icu) at 440 V AC | 180 kA |
| Ultimate short-circuit breaking capacity (Icu) at 500 V AC | 150 kA |
| Ultimate short-circuit breaking capacity (Icu) at 690 V AC | 80 kA |
| Mounting | Fixed |
| Terminal arrangement | Front terminals |
| Dimensions (H × W × D) | 205 × 105 × 103.5 mm |
| Net weight | approx. 2.35 kg |
Frequently Asked Questions
What is the ABB 1SDA054246R1?
The ABB 1SDA054246R1 is a Tmax T4V 250 fixed 3-pole moulded case circuit breaker with front terminals and an 80 A TMA thermomagnetic trip unit.
What is the rated current of this circuit breaker?
This T4V 250 configuration has a rated current of 80 A and uses a T4 frame with a rated uninterrupted current of 250 A.
What protection does the TMA trip unit provide?
The TMA trip unit provides adjustable thermal overload and magnetic short-circuit protection, with this model offering a magnetic adjustment range of 400–800 A.
What is the breaking capacity of the ABB T4V 250?
This configuration provides an ultimate short-circuit breaking capacity of 200 kA at 380–415 V AC, with the available breaking capacity varying according to operating voltage.
Where is the ABB T4V 250 TMA typically used?
It is typically installed in industrial and commercial low-voltage switchboards, machinery and distribution panels requiring adjustable thermomagnetic protection and very high short-circuit breaking performance.
Trusted ABB Circuit Protection
ABB Tmax moulded case circuit breakers are widely used in industrial and commercial electrical distribution systems, providing dependable switching, adjustable thermomagnetic protection and high short-circuit performance for demanding low-voltage installations.
