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1SDA055054R1 ABB TA EXT NEUTRAL 250A T4
ABB 1SDA055054R1 TA EXT NEUTRAL is a 250 A external neutral current transformer for compatible SACE Tmax T4 circuit breaker electronic protection systems.
£246.14
Why Choose the ABB TA EXT NEUTRAL 250A T4?
The ABB TA EXT NEUTRAL 250A T4, order code 1SDA055054R1, is an external neutral current transformer designed for compatible ABB SACE Tmax T4 circuit breaker protection systems. Rated at 250 A, it enables the neutral conductor current to be measured externally where the selected electronic protection arrangement requires neutral current sensing.
Designed specifically for the ABB SACE Tmax T4 platform, the external neutral transformer extends current measurement to the neutral conductor without requiring the neutral to pass through an additional circuit breaker pole. This makes it useful in compatible three-phase distribution arrangements where neutral monitoring is required as part of the protection system.
The 250 A rating matches compatible T4 protection configurations requiring a 250 A external neutral current transformer. As a genuine ABB accessory, the 1SDA055054R1 is intended to integrate with the relevant Tmax T4 electronic trip and protection architecture rather than operate as a standalone protective device.
Key Advantages
- Genuine ABB SACE Tmax T4 protection accessory.
- 250 A external neutral current transformer.
- Provides neutral-current sensing for compatible protection configurations.
- Designed specifically for the ABB SACE Tmax T4 platform.
- Supports protection arrangements where the neutral conductor is external to the circuit breaker poles.
- Allows neutral current information to be incorporated into a compatible electronic protection system.
- Purpose-designed for integration with ABB Tmax circuit breaker protection architecture.
Key Features
- ABB SACE Tmax T4 accessory.
- TA external neutral current transformer.
- 250 A rated current.
- Designed for neutral conductor current measurement.
- External installation relative to the circuit breaker poles.
- Compatible with appropriate Tmax T4 electronic protection configurations.
- Supports neutral-current monitoring within low-voltage distribution systems.
- Accessory component rather than a standalone circuit breaker or trip unit.
External Neutral Current Measurement
In suitable three-phase distribution systems, protection requirements can include measurement of current flowing through the neutral conductor. The ABB 1SDA055054R1 provides this measurement externally, allowing a compatible Tmax T4 electronic protection arrangement to receive neutral-current information without the neutral conductor forming part of the circuit breaker's main pole configuration.
The current transformer is rated at 250 A and should be used only with compatible ABB protection configurations designed for an external neutral sensor. Correct coordination between the current transformer, circuit breaker and electronic trip system is essential for the intended neutral monitoring and protection functions.
Typical Applications
- ABB SACE Tmax T4 circuit breaker protection systems.
- Three-phase electrical distribution systems with a neutral conductor.
- Industrial low-voltage distribution switchboards.
- Commercial building distribution panels.
- Manufacturing and process plant electrical systems.
- Main and sub-distribution assemblies.
- Systems requiring external neutral current measurement.
- Compatible electronic protection arrangements requiring a 250 A neutral current transformer.
Technical Specifications
| Series | SACE Tmax T4 |
|---|---|
| Order code / MPN | 1SDA055054R1 |
| Product group | Tmax T4 - T8 |
| Product type | External neutral current transformer |
| Accessory type | Neutral current sensing transformer |
| Rated current | 250 A |
| Measured conductor | Neutral |
| Installation | External neutral conductor |
| Compatible circuit breaker family | ABB SACE Tmax T4 |
| Function | Neutral current measurement for compatible electronic protection systems |
Frequently Asked Questions
What is the ABB 1SDA055054R1?
The ABB 1SDA055054R1 is a 250 A external neutral current transformer designed for compatible ABB SACE Tmax T4 circuit breaker protection systems.
What is the current rating of the ABB 1SDA055054R1?
The external neutral current transformer is rated at 250 A.
What does TA EXT NEUTRAL mean?
TA EXT NEUTRAL identifies a current transformer intended for external measurement of current in the neutral conductor as part of a compatible ABB circuit breaker protection system.
Which circuit breaker family is the ABB 1SDA055054R1 designed for?
The 1SDA055054R1 is designed for compatible ABB SACE Tmax T4 circuit breaker protection configurations.
Is the ABB 1SDA055054R1 a circuit breaker?
No. The 1SDA055054R1 is an external neutral current transformer accessory used for neutral-current measurement and must be integrated with a compatible ABB Tmax T4 protection system.
Trusted ABB Circuit Breaker Protection Accessories
ABB SACE Tmax protection accessories provide purpose-designed sensing and integration components for low-voltage distribution systems, with external neutral current transformers extending current measurement to the neutral conductor in compatible Tmax T4 protection configurations.
