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1SDA054450R1 ABB T5L 400 TMA 320-3200 320 A 4-Pole MCCB
ABB 1SDA054450R1 T5L 400 TMA 320-3200 is a 320 A four-pole fixed moulded case circuit breaker with front terminals and adjustable thermomagnetic overload and short-circuit protection.
£3,630.52
Why Choose the ABB T5L 400 TMA 320-3200 Circuit Breaker?
The ABB T5L 400 TMA 320-3200, order code 1SDA054450R1, is a 4-pole moulded case circuit breaker (MCCB) from the ABB SACE Tmax T5 range. Designed for low-voltage power distribution, it combines a 400 A frame with a 320 A TMA adjustable thermomagnetic trip unit.
The TMA thermomagnetic release provides thermal overload and magnetic short-circuit protection without requiring an electronic trip unit. Its thermal setting can be adjusted to suit the protected circuit, while the magnetic protection provides an adjustable instantaneous threshold up to 3200 A.
The T5L performance level is intended for installations requiring high short-circuit interruption capability. With its 4-pole fixed construction and front terminals, this breaker is well suited to three-phase plus neutral distribution systems, industrial switchboards, feeder circuits and commercial power distribution.
Key Advantages
- ABB SACE Tmax T5 moulded case circuit breaker for industrial power distribution.
- 320 A rated current within a 400 A frame.
- TMA adjustable thermomagnetic release.
- Provides both thermal overload and magnetic short-circuit protection.
- Adjustable instantaneous magnetic protection up to 3200 A.
- 4-pole configuration for three-phase plus neutral distribution systems.
- Fixed construction for permanent switchboard installations.
- Front terminals provide practical connection within low-voltage assemblies.
Key Features
- ABB SACE Tmax T5L 400 platform.
- 320 A rated current.
- 400 A rated uninterrupted frame current.
- TMA thermomagnetic trip unit.
- Adjustable thermal overload protection.
- Adjustable magnetic short-circuit protection.
- 3200 A upper magnetic trip setting.
- 4-pole configuration.
- Fixed mounting.
- Front terminals.
Adjustable Thermomagnetic Circuit Protection
The ABB TMA release combines two established protection principles in one trip unit. The thermal element responds to sustained overload currents, while the magnetic element provides rapid operation when a high short-circuit current occurs. This provides dependable protection without the need for an externally powered electronic release.
Adjustable thermomagnetic protection allows the breaker settings to be coordinated with the characteristics of the protected conductors and load. Combined with the four-pole T5L platform, the 1SDA054450R1 provides a robust solution for three-phase plus neutral distribution systems requiring straightforward overload and short-circuit protection.
Typical Applications
- Industrial low-voltage distribution boards.
- Three-phase plus neutral electrical systems.
- Main and feeder circuit protection.
- Manufacturing and process installations.
- Commercial building distribution boards.
- Industrial machinery power distribution.
- Switchboards requiring adjustable thermomagnetic protection.
Technical Specifications
| Series | SACE Tmax T5 |
|---|---|
| ABB order code | 1SDA054450R1 |
| Product type | Moulded case circuit breaker (MCCB) |
| Frame | T5 |
| Performance level | L |
| Rated uninterrupted frame current (Iu) | 400 A |
| Rated current (In) | 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 |
Frequently Asked Questions
What is the ABB 1SDA054450R1?
The ABB 1SDA054450R1 is a Tmax T5L 400 fixed 4-pole moulded case circuit breaker with front terminals and a 320 A TMA thermomagnetic trip unit.
What type of protection does the TMA trip unit provide?
The TMA trip unit provides thermal overload protection and magnetic short-circuit protection, giving the breaker conventional thermomagnetic circuit protection.
What is the rated current of ABB 1SDA054450R1?
The breaker has a rated current of 320 A and is built on a T5 frame with a rated uninterrupted current of 400 A.
What is the magnetic protection range of the T5L 400 TMA 320-3200?
The TMA release provides adjustable magnetic short-circuit protection with an upper setting of 3200 A, allowing the instantaneous protection to be coordinated with the installation.
Where is the ABB T5L 400 TMA typically used?
It is typically used in industrial switchboards, feeder circuits, machinery and three-phase plus neutral distribution systems requiring adjustable thermomagnetic overload and short-circuit protection.
Trusted ABB Circuit Protection
ABB SACE Tmax moulded case circuit breakers combine robust construction, flexible trip-unit options and dependable fault protection for industrial and commercial low-voltage power distribution.
