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1SDA066979R1 ABB External Neutral Current Transformer 250 A XT4
ABB 1SDA066979R1 is a 250 A external neutral current transformer designed for neutral-current measurement in compatible ABB SACE Tmax XT4 moulded-case circuit breaker protection systems.
£116.40
Why Choose the ABB 1SDA066979R1 External Neutral Current Transformer?
The ABB 1SDA066979R1 is a genuine 250 A external neutral current transformer designed for use with compatible ABB SACE Tmax XT4 moulded-case circuit breakers. Identified by ABB as TA NEUTRO EXT 250A XT4, this current sensor enables measurement of current flowing through an external neutral conductor as part of a compatible low-voltage protection system.
As part of the ABB SACE Tmax XT accessory range, the 1SDA066979R1 is engineered specifically for the XT4 frame. External neutral current sensing is used where the neutral conductor does not pass directly through the circuit breaker, allowing compatible electronic trip units to receive the neutral-current information required for the configured protection functions.
With a rated current of 250 A, the 1SDA066979R1 provides a purpose-designed ABB solution for XT4 installations requiring external neutral monitoring. Its compact 110 × 60 × 130 mm format and loose/configurable design make it suitable for integration into professional switchboards, distribution panels and industrial electrical assemblies.
Key Advantages
- Genuine ABB external neutral current transformer for Tmax XT4.
- 250 A rated current for compatible protection applications.
- Provides current measurement on an external neutral conductor.
- Purpose-designed for compatible ABB SACE Tmax XT4 circuit breakers.
- Suitable for professional low-voltage switchboards and distribution systems.
- Compact accessory designed for reliable integration with the ABB Tmax XT platform.
Key Features
- ABB SACE Tmax XT accessory.
- External neutral current transformer / current sensor.
- 250 A current rating.
- XT4 frame compatibility.
- Designed for external neutral conductor current measurement.
- IEC 60947-2 and UL 489 reference standards.
- Loose or configurable installation format.
- Genuine ABB component for compatible circuit breaker protection systems.
External Neutral Current Measurement for ABB Tmax XT
An external neutral current transformer provides neutral-current measurement where the neutral conductor is routed separately from the circuit breaker. In compatible protection arrangements, this allows the electronic trip system to monitor the neutral conductor alongside the phase conductors and apply the configured protection functions using the required current information.
The ABB 1SDA066979R1 is rated at 250 A and specifically designed for compatible Tmax XT4 installations. Using a purpose-designed ABB current sensor helps ensure correct integration between the external neutral measurement point and the associated circuit breaker protection system in professionally engineered low-voltage distribution assemblies.
Typical Applications
- ABB SACE Tmax XT4 moulded-case circuit breaker installations.
- External neutral conductor current measurement.
- Low-voltage electrical distribution systems.
- Industrial switchboards and switchgear assemblies.
- Commercial power distribution panels.
- Protection systems requiring external neutral current sensing.
Technical Specifications
| Series | SACE Tmax XT |
|---|---|
| Product group | T-Max XT 250 Range |
| Model / order code | 1SDA066979R1 |
| Extended product type | TA NEUTRO EXT 250A XT4 |
| Product type | External neutral current transformer |
| Product main type | Accessories for Tmax XT |
| Function | External neutral current measurement |
| Rated current | 250 A |
| Compatible frame size | XT4 |
| Suitable product class | SACE Tmax XT |
| Configuration type | Loose or configurable |
| Standards | IEC 60947-2, UL 489 |
| Dimensions (W × H × D) | 110 × 60 × 130 mm |
| Net weight | 0.2 kg |
| EAN | 8015644008857 |
| US and Canada order code | KXT4ECT250 |
| Customs tariff number | 85389099 |
| Minimum order quantity | 1 piece |
| RoHS status | Compliant with EU Directive 2011/65/EU and amendment 2015/863 |
Frequently Asked Questions
What is the ABB 1SDA066979R1 used for?
The ABB 1SDA066979R1 is a 250 A external neutral current transformer used to measure current flowing through an external neutral conductor in compatible ABB SACE Tmax XT4 circuit breaker protection systems.
Which ABB circuit breaker frame is the 1SDA066979R1 compatible with?
The external neutral current transformer is designed for compatible ABB SACE Tmax XT4 moulded-case circuit breaker installations.
What is the current rating of the ABB 1SDA066979R1?
The ABB 1SDA066979R1 has a rated current of 250 A.
What does TA NEUTRO EXT mean?
TA NEUTRO EXT identifies the accessory as a current transformer for an external neutral conductor, allowing neutral current to be measured separately from the circuit breaker's phase conductors in compatible installations.
What are the dimensions of the ABB 1SDA066979R1?
The ABB 1SDA066979R1 measures approximately 110 × 60 × 130 mm and has a net weight of approximately 0.2 kg.
Trusted ABB Circuit Breaker Accessories
ABB SACE Tmax XT accessories are engineered for integration with compatible Tmax XT moulded-case circuit breakers, helping panel builders and electrical engineers implement reliable current measurement and protection within modern low-voltage distribution systems.
