Why Choose the ABB CT1M-12 5000 Current Transformer?
The ABB CT1M-12 5000 is a closed-core 5000/5 A current transformer designed for indirect electrical measurement in high-current low-voltage distribution systems. Supplied under ABB order code 2CSG280685R1000, it forms part of the ABB CT1M current transformer range and is manufactured for current measurement applications in accordance with IEC 61869-2.
With a rated primary current of 5000 A and a rated secondary current of 5 A, the CT1M-12 5000 converts high primary currents into a proportional standard secondary signal for compatible electricity meters, ammeters, power analysers and monitoring equipment. It provides class 0.5 accuracy with a 100 VA rated output, while the rated outputs at classes 1 and 3 are also 100 VA.
The CT1M-12 5000 uses a through-primary design specifically suited to substantial busbar installations, accommodating a horizontal busbar section up to 125 × 93 mm. Its 206 × 225 × 50 mm dimensions, IP20 degree of protection and 50–60 Hz rated frequency make it a high-capacity metering solution for main switchboards and industrial power distribution systems.
Key Advantages
- High-capacity 5000/5 A current transformation for indirect electrical measurement.
- Class 0.5 accuracy supports precise high-current metering applications.
- High 100 VA rated output at accuracy class 0.5.
- 100 VA rated output at classes 0.5, 1 and 3.
- Standard 5 A secondary output for compatible measuring equipment.
- FS 5 current limiting function for metering applications.
- Large through-primary opening designed for substantial busbar systems.
- Accommodates a horizontal busbar section up to 125 × 93 mm.
- Busbar and mounting-foot fixings are supplied as standard.
- Designed in accordance with IEC 61869-2 for instrument current transformers.
Key Features
- ABB CT1M-12 closed-core current transformer.
- 5000 A rated primary current.
- 5 A rated secondary current.
- 5000/5 A transformation ratio.
- Class 0.5 measurement accuracy.
- 100 VA rated output at class 0.5.
- 100 VA rated output at class 1.
- 100 VA rated output at class 3.
- FS 5 current limiting function.
- 50–60 Hz rated frequency.
- IP20 degree of protection.
- Through-primary construction for high-current horizontal busbar installations.
Current transformers enable electricity meters and monitoring instruments to measure circuits carrying currents far above their direct-input capability. The ABB CT1M-12 5000 transforms a primary current of 5000 A into a proportional 5 A secondary current, allowing compatible instrumentation to perform indirect measurement of electrical network parameters.
The CT1M-12 5000 combines class 0.5 accuracy with an unusually high 100 VA rated output and a large 125 × 93 mm horizontal busbar opening. This makes it particularly suitable for high-capacity switchboards, industrial distribution systems and other installations requiring accurate monitoring of substantial electrical loads through a standard 5 A metering interface.
Typical Applications
- High-current electrical energy metering systems.
- Main low-voltage distribution switchboards.
- Large industrial power distribution assemblies.
- High-capacity horizontal busbar measurement systems.
- Power and network monitoring installations.
- Building and industrial energy management systems.
- Panel-mounted ammeters and power analysers.
- 5000 A feeder and distribution circuit measurement.
