2CSG300200R1211 ABB TR6/A Openable Toroidal Transformer 300 mm
ABB TR6/A is a 300 mm openable toroidal transformer with a 500/1 transformation ratio designed for residual current and earth leakage monitoring in low-voltage electrical installations.
The ABB TR6/A is an openable toroidal transformer designed for residual current and earth leakage monitoring in low-voltage electrical installations. As part of the ABB TR toroidal transformer series, it works with compatible residual current monitors to detect current imbalance in the active conductors passing through the transformer.
With a large 300 mm internal diameter, the TR6/A is particularly suitable for installations containing large conductors, busbar arrangements or groups of cables. Its openable core simplifies installation around existing conductors, avoiding the need to disconnect and feed installed cables through a closed toroid.
The TR6/A combines a 500/1 transformation ratio, 1000 mA minimum measurable current and IP20 protection. It can be installed in any position and operates across a temperature range of -10 to +70 °C, providing a practical sensing solution for industrial switchboards, distribution systems and electrical protection applications.
Key Advantages
Large 300 mm internal diameter for substantial conductors and cable groups.
Openable core construction simplifies retrofitting around existing conductors.
Designed for residual current and earth leakage monitoring.
500/1 transformation ratio for integration with compatible monitoring equipment.
Flexible installation with any mounting position permitted.
IP20 protection for installation within suitable electrical enclosures.
Key Features
ABB TR series toroidal transformer.
Openable core design.
300 mm internal diameter.
1000 mA minimum measurable current.
500/1 transformation ratio.
1000 V AC maximum insulating voltage.
2.5 kV dielectric test voltage at industrial frequency for 1 minute.
40 kA for 1 second maximum thermal overload.
IP20 protection rating.
Screw terminal connections accepting conductors up to 2.5 mm².
Reliable Residual Current Monitoring
Toroidal transformers monitor the vector sum of the currents flowing through the active conductors of an electrical circuit. During normal operation these currents balance, while leakage to earth produces a residual current that can be detected by the toroid and evaluated by the connected residual current monitoring device.
The ABB TR6/A is particularly useful for larger installations because its 300 mm openable core can be fitted around existing conductors. When combined with compatible ABB residual current monitoring equipment, it provides dependable sensing for earth leakage supervision in industrial and commercial electrical distribution systems.
Typical Applications
Residual current and earth leakage monitoring systems.
Industrial low-voltage switchboards.
Electrical distribution panels and assemblies.
Large conductor and multi-cable installations.
Retrofit residual current monitoring projects.
Industrial machinery and plant electrical systems.
Technical Specifications
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Aperture (mm)
300 mm
Device Type
Split-core CT
Series
TR Toroidal Transformers
ABB order code
2CSG300200R1211
Product type
Openable toroidal transformer
Core type
Open
Internal diameter
300 mm
Minimum measurable current
1000 mA
Transformation ratio
500/1
Maximum insulating voltage
1000 V AC
Dielectric test voltage
2.5 kV for 1 minute
Maximum thermal overload
40 kA for 1 second
Connections
Screw terminal boards, maximum 2.5 mm² conductor section
Protection rating
IP20
Operating temperature
-10 to +70 °C
Storage temperature
-20 to +80 °C
Installation position
Any
Dimensions (H × W × D)
416 × 385 × 60 mm
Weight
2.3 kg
Frequently Asked Questions
What is the ABB TR6/A used for?
The ABB TR6/A is used with compatible residual current monitoring equipment to detect residual and earth leakage currents in low-voltage electrical installations.
What is the internal diameter of the ABB TR6/A?
The TR6/A has a large 300 mm internal diameter, making it suitable for substantial conductors and groups of cables.
Can the ABB TR6/A be opened for installation?
Yes. The TR6/A has an openable core, allowing it to be installed around existing conductors without feeding the conductors through a permanently closed toroid.
What is the minimum measurable current of the TR6/A?
The ABB TR6/A has a specified minimum measurable current of 1000 mA.
What is the transformation ratio of the ABB TR6/A?
The TR6/A has a 500/1 transformation ratio for use with compatible residual current monitoring equipment.
Trusted ABB Residual Current Monitoring Technology
ABB TR toroidal transformers provide dependable residual current sensing for electrical distribution systems, with the TR6/A combining a large 300 mm aperture and openable construction for convenient installation around substantial or existing conductors.
Aperture (mm)
300 mm
Device Type
Split-core CT
Series
TR Toroidal Transformers
ABB order code
2CSG300200R1211
Product type
Openable toroidal transformer
Core type
Open
Internal diameter
300 mm
Minimum measurable current
1000 mA
Transformation ratio
500/1
Maximum insulating voltage
1000 V AC
Dielectric test voltage
2.5 kV for 1 minute
Maximum thermal overload
40 kA for 1 second
Connections
Screw terminal boards, maximum 2.5 mm² conductor section
Protection rating
IP20
Operating temperature
-10 to +70 °C
Storage temperature
-20 to +80 °C
Installation position
Any
Dimensions (H × W × D)
416 × 385 × 60 mm
Weight
2.3 kg
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UK delivery
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This productManufacturer Lead Time
Estimated Delivery 10 weeks
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