Why Choose the ABB CT1M-S-80 800 Current Transformer?
The ABB CT1M-S-80 800 is a 800/5 A current transformer designed for indirect measurement of electrical parameters in low-voltage distribution systems. Supplied under ABB order code 2CSG280805R1000, it forms part of the ABB CT1M-S-80 series and provides a standard 5 A secondary signal for compatible electrical metering and monitoring equipment.
With a rated primary current of 800 A and rated secondary current of 5 A, the CT1M-S-80 800 provides class 0.5 accuracy with a 7.5 VA rated output. It also provides 10 VA at class 1 and 12.5 VA at class 3, supporting accurate current measurement, energy metering and power monitoring applications.
The CT1M-S-80 series uses a through-primary design with an opening suitable for vertical busbars up to 85 × 55 mm. With IP20 protection, a 50–60 Hz rated frequency and dimensions of 158 × 125 × 40 mm, the CT1M-S-80 800 is well suited to switchboards, distribution panels and industrial energy monitoring installations.
Key Advantages
- Reliable 800/5 A current transformation for indirect electrical measurement.
- Class 0.5 accuracy for precise metering and monitoring applications.
- 7.5 VA rated output at accuracy class 0.5.
- 10 VA rated output at class 1.
- 12.5 VA rated output at class 3.
- Standard 5 A secondary output for compatible measuring equipment.
- FS 10 overcurrent limiting factor for metering applications.
- Large through-primary opening suitable for vertical busbars up to 85 × 55 mm.
- IP20 degree of protection for installation within suitable electrical enclosures.
- Designed in accordance with IEC 61869-2 for instrument current transformers.
Key Features
- ABB CT1M-S-80 current transformer.
- 800 A rated primary current.
- 5 A rated secondary current.
- 800/5 A transformation ratio.
- Class 0.5 best accuracy class.
- 7.5 VA rated output at class 0.5.
- 10 VA rated output at class 1.
- 12.5 VA rated output at class 3.
- FS 10 overcurrent limiting factor.
- 50–60 Hz rated frequency.
- IP20 degree of protection.
- Through-primary construction for vertical busbar installations.
Accurate Indirect Current Measurement
Current transformers enable electricity meters and monitoring instruments to measure circuits carrying currents beyond their direct-input capability. The ABB CT1M-S-80 800 transforms a primary current of 800 A into a proportional 5 A secondary current, providing a standard interface for compatible metering, monitoring and measurement equipment.
The CT1M-S-80 800 combines class 0.5 measurement accuracy with a generous through-primary opening for substantial vertical busbars. This makes it particularly useful in switchboards and distribution systems where accurate current measurement, straightforward conductor integration and a standard 5 A secondary interface are required.
Typical Applications
- Electrical energy metering systems.
- Low-voltage distribution switchboards.
- Commercial electrical distribution panels.
- Industrial power monitoring systems.
- Building energy management installations.
- Vertical busbar current measurement applications.
- Panel-mounted ammeters and power analysers.
- Indirect measurement of 800 A electrical circuits.
