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2CSG080100R1211 ABB TR3 Toroidal Transformer 80mm
ABB TR3 is a closed 80 mm toroidal current transformer designed for residual current and earth leakage monitoring with compatible ABB RD and ELR relays.
£176.72
Why Choose the ABB TR3 Toroidal Transformer?
The ABB TR3 is a reliable toroidal current transformer for residual current monitoring designed for use with compatible ABB earth leakage relays and residual current monitors. As part of ABB’s Earth Monitoring Devices range, it provides the external current-sensing element required to detect leakage currents in commercial and industrial electrical installations.
The TR3 features a closed 80 mm internal diameter, allowing the protected circuit conductors to pass through the transformer aperture. It is designed for use with compatible ABB RD and ELR residual current monitoring relays, enabling the relay to monitor residual current and initiate the appropriate alarm or trip response according to the relay configuration.
With compact dimensions of approximately 160 × 150 × 50 mm and a through-feed current converter design, the TR3 provides a practical sensing solution for electrical panels and distribution systems. Its 80 mm aperture makes it suitable for installations requiring more conductor space than smaller TR-series toroidal transformers while retaining a closed-core construction.
Key Advantages
- Reliable toroidal current transformer for residual current monitoring.
- 80 mm internal diameter accommodates multiple or larger circuit conductors.
- Designed for use with compatible ABB RD and ELR residual current relays.
- Closed-core, non-openable construction for permanent installations.
- Screw-connected secondary output for secure electrical termination.
- Suitable for commercial and industrial earth leakage monitoring systems.
Key Features
- ABB TR series toroidal transformer.
- 80 mm internal aperture diameter.
- Through-feed current converter design.
- Closed, non-openable transformer construction.
- Screw connection for the secondary output.
- FS 5 current limit function.
- One primary input through the toroidal aperture.
- Designed for compatible ABB residual current monitoring relays.
- RoHS compliant according to EU Directive 2011/65/EU.
Reliable Residual Current Monitoring
Toroidal transformers such as the ABB TR3 operate as the sensing element within an earth leakage monitoring system. The live conductors of the protected circuit pass through the transformer aperture and, under normal conditions, their currents balance. An earth leakage fault creates a residual current imbalance that can be detected by the connected monitoring relay.
The ABB TR series is designed for use with compatible residual current relays including ABB RD and ELR devices. The TR3’s 80 mm internal diameter provides useful installation capacity for larger conductors or groups of conductors, while its closed-core construction makes it well suited to new panel builds and installations where conductors can be routed through the transformer during assembly.
Typical Applications
- Industrial earth leakage monitoring systems.
- Commercial electrical distribution boards.
- Electrical switchboards and control panels.
- Residual current monitoring with compatible ABB RD relays.
- Residual current monitoring with compatible ABB ELR relays.
- Three-phase and other circuits requiring external toroidal residual current sensing.
Technical Specifications
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| Aperture (mm) | 110 mm | |
|---|---|---|
| Device Type | Solid-core CT | |
| Rated Primary Current (A) | 100 A | |
| Product group | Earth Monitoring Devices | |
| Series | TR Toroidal Transformers | |
| ABB order code | 2CSG080100R1211 | |
| Product type | Toroidal current transformer | |
| Application | Residual current / earth leakage monitoring | |
| Internal diameter | 80 mm | |
| Construction | Closed / non-openable | |
| Converter type | Through-feed current converter | |
| Number of primary inputs | 1 | |
| Secondary output connection | Screw connection | |
| Current limit function | FS 5 | |
| Dimensions (H × W × D) | approx. 160 × 150 × 50 mm | |
| Net weight | approx. 0.4 kg | |
| Package gross weight | approx. 0.46 kg | |
| RoHS status | Compliant with EU Directive 2011/65/EU | |
| EAN | 8012542020509 |
Frequently Asked Questions
What is the ABB TR3 used for?
The ABB TR3 is a toroidal current transformer used with compatible residual current monitoring relays to detect earth leakage and residual currents in electrical installations.
What is the internal diameter of the ABB TR3?
The ABB TR3 has an 80 mm internal diameter, providing space for the protected circuit conductors to pass through the toroidal transformer.
Which ABB relays can the TR3 be used with?
The TR3 is designed for use with compatible ABB RD and ELR residual current monitoring relays.
Is the ABB TR3 an openable toroidal transformer?
No. The TR3 is a closed, non-openable toroidal transformer, so the protected conductors are passed through its 80 mm aperture during installation.
How does the ABB TR3 detect earth leakage?
The circuit conductors pass through the toroidal transformer, which senses residual current imbalance caused by leakage to earth and provides the corresponding signal to a compatible residual current monitoring relay.
Trusted ABB Earth Leakage Monitoring
ABB toroidal transformers provide dependable residual current sensing for compatible earth leakage monitoring systems, with the TR3 offering an 80 mm closed aperture for commercial and industrial electrical installations.
