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2CSG160200R1211 ABB TR160/A Openable Toroidal Transformer 160mm
ABB TR160/A is an openable 160 mm toroidal transformer with a 500/1 transformation ratio for residual-current sensing with compatible ABB earth-leakage monitoring relays.
£548.68
Why Choose the ABB TR160/A Toroidal Transformer?
The ABB TR160/A is an openable toroidal transformer designed for residual-current monitoring and earth-leakage protection systems. With a large 160 mm internal diameter, it allows the active conductors of higher-capacity electrical circuits to pass through the sensing core while providing the residual-current measurement signal required by a compatible ABB monitoring relay.
Its openable split-core construction is particularly useful where installation around existing conductors is required, reducing the need to disconnect and thread installed cables through a closed toroid. The TR160/A uses a 500/1 transformation ratio and is designed for use with ABB residual-current relays such as the ELR range.
Designed for electrical distribution and industrial control applications, the TR160/A combines a 160 mm aperture with flexible mounting orientation, screw-terminal connections and IP20 protection. It forms the sensing element of a residual-current monitoring system, allowing the connected relay to identify leakage or earth-fault currents and initiate the required alarm or protective action.
Key Advantages
- 160 mm internal diameter accommodates large conductors and multi-conductor circuit arrangements.
- Openable split-core design simplifies installation around existing conductors.
- 500/1 transformation ratio for use in ABB residual-current monitoring systems.
- Compatible with ABB ELR residual-current relays and associated monitoring equipment.
- Any-position installation provides flexibility within switchboards and control panels.
- IP20 protection for installation inside suitable electrical enclosures.
- Designed for dependable residual-current sensing in commercial and industrial distribution systems.
Key Features
- ABB TR-series toroidal transformer.
- Openable core construction.
- 160 mm internal diameter.
- 500/1 transformation ratio.
- 300 mA minimum measurable current.
- 1000 V AC maximum insulation voltage.
- 2.5 kV dielectric test voltage at industrial frequency for 1 minute.
- 40 kA for 1 s maximum thermal overload.
- IP20 degree of protection.
- Screw-terminal connections for conductors up to 2.5 mm².
Reliable Residual-Current Sensing
The TR160/A operates by surrounding the active conductors of the monitored circuit. Under normal conditions, the vector sum of the currents flowing through those conductors is effectively zero. If an insulation fault or earth-leakage path develops, the resulting current imbalance creates a residual magnetic flux in the toroidal core, producing a signal that can be evaluated by the connected residual-current relay.
Because the TR160/A is the sensing transformer rather than a standalone protective device, it is used as part of a complete residual-current monitoring arrangement with a compatible relay and, where protective disconnection is required, suitable circuit-breaking equipment. Its openable 160 mm core makes it particularly practical for retrofitting monitoring to existing installations with large conductors.
Typical Applications
- Industrial low-voltage switchboards.
- Commercial electrical distribution systems.
- Earth-leakage and insulation-fault monitoring systems.
- Residual-current protection schemes using ABB ELR relays.
- Large conductor and multi-conductor circuit monitoring.
- Retrofit installations where an openable toroidal core simplifies installation around existing cables.
Technical Specifications
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| Aperture (mm) | 236 × 236 mm | |
|---|---|---|
| Device Type | Split-core CT | |
| Rated Primary Current (A) | 16 A | |
| Series | TR | |
| ABB order code | 2CSG160200R1211 | |
| Product type | Toroidal transformer | |
| Core type | Openable / split core | |
| Internal diameter | 160 mm | |
| Minimum measurable current | 300 mA | |
| Transformation ratio | 500/1 | |
| Maximum insulation voltage | 1000 V AC | |
| Dielectric test voltage | 2.5 kV for 1 minute | |
| Maximum thermal overload | 40 kA for 1 s | |
| Operating temperature | -10 to +70 °C | |
| Storage temperature | -20 to +80 °C | |
| Protection degree | IP20 | |
| Connections | Screw terminals, maximum conductor section 2.5 mm² | |
| Overall dimensions | 220 mm × 236 mm × 64 mm | |
| Installation position | Any |
Frequently Asked Questions
What is the ABB TR160/A used for?
The ABB TR160/A is an openable toroidal transformer used to sense residual current in electrical circuits and provide the measurement signal to a compatible residual-current monitoring relay.
What is the internal diameter of the ABB TR160/A?
The TR160/A has an internal diameter of 160 mm, providing a large aperture for the conductors of the monitored circuit.
Is the ABB TR160/A an openable toroidal transformer?
Yes. The TR160/A has an openable split-core design, allowing it to be installed around existing conductors without requiring them to be threaded through a closed toroidal core.
What is the transformation ratio of the TR160/A?
The ABB TR160/A has a 500/1 transformation ratio for residual-current sensing applications.
Can the TR160/A provide residual-current protection by itself?
No. The TR160/A is the sensing transformer within a residual-current monitoring system and must be used with a compatible residual-current relay and suitable associated protection equipment where automatic disconnection is required.
Trusted ABB Earth-Fault Monitoring
ABB TR-series toroidal transformers provide dependable residual-current sensing for earth-leakage monitoring systems, with the openable TR160/A offering a large 160 mm aperture for practical integration into new and existing electrical distribution installations.
