Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
1SDA054270R1 ABB T4V 320 TMA 320-3200 320 A 4-Pole MCCB
ABB 1SDA054270R1 T4V 320 TMA 320-3200 is a 320 A four-pole fixed moulded case circuit breaker with front terminals and TMA thermomagnetic overload and short-circuit protection for demanding low-voltage distribution systems.
£3,786.53
Why Choose the ABB T4V 320 TMA 320-3200 Circuit Breaker?
The ABB T4V 320 TMA 320-3200, order code 1SDA054270R1, is a high-performance 4-pole moulded case circuit breaker (MCCB) designed for protection and switching in low-voltage electrical distribution systems. As part of the proven ABB Tmax T4 series, it combines a 320 A current rating with a TMA thermomagnetic trip unit for dependable protection of demanding industrial and commercial power circuits.
The TMA thermomagnetic trip unit provides thermal overload and magnetic short-circuit protection without requiring an external power supply. This 320 A configuration provides adjustable overload protection together with magnetic short-circuit protection up to 3200 A, allowing effective protection of cables, feeders and connected electrical equipment.
The T4V performance level is engineered for installations requiring very high short-circuit interruption capability. This configuration is a 4-pole fixed circuit breaker with front terminals, making it suitable for permanent installation in low-voltage switchboards, distribution panels and industrial power assemblies.
Key Advantages
- High-performance ABB Tmax T4 moulded case circuit breaker.
- 320 A rated current for substantial industrial and commercial distribution loads.
- T4V performance level designed for very high short-circuit breaking capability.
- TMA thermomagnetic release provides overload and short-circuit protection.
- Magnetic short-circuit protection up to 3200 A.
- 4-pole construction for multipole electrical distribution systems.
- Fixed mounting with front terminals for straightforward switchboard integration.
Key Features
- ABB Tmax T4V 320 circuit breaker.
- 320 A rated current.
- 4-pole configuration.
- Fixed mounting execution.
- Front terminals.
- TMA thermomagnetic trip unit.
- Thermal overload protection.
- Magnetic short-circuit protection up to 3200 A.
- Self-powered thermomagnetic protection principle.
- Designed for demanding low-voltage power distribution applications.
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 high fault-current interruption performance for demanding industrial and commercial distribution systems.
The TMA release uses a thermal element to protect against sustained overload conditions and magnetic operation to respond rapidly to severe short-circuit currents. This self-powered protection principle provides dependable circuit protection without the need for auxiliary power to operate the trip unit.
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.
- Four-pole electrical distribution circuits.
- Installations requiring high-performance thermomagnetic protection.
Technical Specifications
| Series | Tmax T4 |
|---|---|
| ABB order code | 1SDA054270R1 |
| Product type | Moulded case circuit breaker (MCCB) |
| Frame | T4 |
| Performance level | V |
| Rated current | 320 A |
| Trip unit | TMA thermomagnetic |
| Protection functions | Thermal overload and magnetic short-circuit |
| Magnetic protection upper setting | 3200 A |
| Number of poles | 4 |
| Mounting | Fixed |
| Terminal arrangement | Front terminals |
| Application | Low-voltage electrical distribution |
Frequently Asked Questions
What is the ABB 1SDA054270R1?
The ABB 1SDA054270R1 is a Tmax T4V 320 fixed 4-pole moulded case circuit breaker with front terminals and a TMA thermomagnetic trip unit.
What is the rated current of this circuit breaker?
The ABB T4V 320 TMA 320-3200 has a rated current of 320 A.
What protection does the TMA trip unit provide?
The TMA trip unit provides thermal overload and magnetic short-circuit protection for low-voltage electrical circuits.
What does 320-3200 mean in the model designation?
It identifies the 320 A breaker rating and magnetic short-circuit protection up to 3200 A for this TMA configuration.
Where is the ABB T4V 320 typically used?
It is typically installed in industrial and commercial low-voltage switchboards, feeder circuits and distribution panels requiring 4-pole thermomagnetic protection.
Trusted ABB Circuit Protection
ABB Tmax moulded case circuit breakers are widely used in industrial and commercial electrical distribution systems, providing dependable switching, thermomagnetic circuit protection and robust performance for demanding low-voltage installations.
