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2CSG280535R1000 ABB CT1M-8 800 Current Transformer 800/5 A
ABB CT1M-8 800 is an 800/5 A through-primary current transformer with Class 0.5 accuracy for indirect electrical metering and energy-monitoring applications.
£108.22
Why Choose the ABB CT1M-8 800 Current Transformer?
The ABB CT1M-8 800 is a reliable 800/5 A current transformer designed for indirect measurement of electrical current in low-voltage metering and energy-monitoring systems. As part of the ABB CT1M current transformer series, it transforms high primary currents into a standardised 5 A secondary current suitable for connection to compatible meters and measuring instruments.
Designed in accordance with IEC 61869-2, the CT1M-8 800 provides a best accuracy class of 0.5 and supports metering applications where dependable current transformation is required. Its through-primary construction accommodates either a cable or busbar, making it suitable for electrical distribution boards, switchboards and energy-monitoring installations.
With a rated primary current of 800 A, rated secondary current of 5 A and rated frequency of 50–60 Hz, the CT1M-8 800 is designed for high-current electrical measurement. It provides rated outputs of 15 VA at Class 0.5, 45 VA at Class 1 and 50 VA at Class 3, while the CT1M-8 frame accepts cables up to 73 mm and busbars up to 80 × 30 mm or 60 × 50 mm.
Key Advantages
- Reliable 800/5 A current transformation for indirect electrical measurement.
- Best accuracy class 0.5 for precise metering applications.
- Designed in accordance with IEC 61869-2.
- Through-primary design suitable for cable or busbar installations.
- Supports cables up to 73 mm through the primary opening.
- Busbar and mounting-foot fixings are supplied as standard for convenient installation.
Key Features
- ABB CT1M-8 current transformer series.
- 800 A rated primary current.
- 5 A rated secondary current.
- 800/5 A transformation ratio.
- Accuracy class 0.5 with 15 VA rated output.
- 45 VA rated output at Class 1.
- 50 VA rated output at Class 3.
- 50–60 Hz rated frequency.
- IP20 protection rating.
- Through-primary construction for indirect current measurement.
Reliable Current Measurement for Electrical Metering
Current transformers allow measuring equipment to monitor high electrical currents without routing the full primary current directly through the measuring instrument. The ABB CT1M-8 800 converts an 800 A primary current proportionally to a standard 5 A secondary signal, enabling compatible ammeters, multifunction meters and energy meters to perform indirect current measurement.
The CT1M range is designed for electrical distribution and energy-efficiency applications where accurate and dependable current measurement is required. The CT1M-8 through-primary format provides flexibility for both cable and busbar conductors, while its defined accuracy classes and VA ratings allow the transformer to be selected for the requirements of the connected metering circuit.
Typical Applications
- Electrical energy metering systems.
- Industrial switchboards and distribution panels.
- Indirect current measurement with ammeters.
- Multifunction electrical measuring instruments.
- Energy monitoring and management systems.
- Commercial and industrial power-distribution installations.
Technical Specifications
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| Rated Burden (VA) | 15 VA | |
|---|---|---|
| Device Type | Solid-core CT | |
| Rated Primary Current (A) | 800 A | |
| Secondary Current / Output | 5 A | |
| Accuracy Class | Class 0.5 | |
| Series | CT1M-8 | |
| Order code | 2CSG280535R1000 | |
| Product type | Current transformer | |
| Primary rated current | 800 A | |
| Secondary rated current | 5 A | |
| Transformation ratio | 800/5 A | |
| Best accuracy class | 0.5 | |
| Rated output, Class 0.5 | 15 VA | |
| Rated output, Class 1 | 45 VA | |
| Rated output, Class 3 | 50 VA | |
| Rated frequency | 50–60 Hz | |
| Standard | IEC 61869-2 | |
| Protection rating | IP20 | |
| Primary type | Through primary | |
| Maximum cable section | 73 mm | |
| Maximum horizontal busbar | 80 × 30 mm or 60 × 50 mm | |
| Maximum vertical busbar | 80 × 30 mm or 60 × 50 mm | |
| Dimensions (H × W × D) | 155 × 140 × 45 mm | |
| Weight | 1.39 kg |
Frequently Asked Questions
What is the ABB CT1M-8 800 used for?
The CT1M-8 800 is used for indirect measurement of electrical current, transforming high primary current into a lower secondary current suitable for compatible meters and monitoring equipment.
What is the transformation ratio of the CT1M-8 800?
The transformer has a rated primary current of 800 A and a rated secondary current of 5 A, giving an 800/5 A transformation ratio.
What accuracy class does this current transformer provide?
The CT1M-8 800 has a best accuracy class of 0.5, with a rated output of 15 VA at Class 0.5.
Can the ABB CT1M-8 800 be installed around a busbar?
Yes. The through-primary CT1M-8 frame supports both cable and busbar conductors, including horizontal or vertical busbars up to 80 × 30 mm or 60 × 50 mm.
Which standard applies to the ABB CT1M current transformer range?
The ABB CT1M range is designed in accordance with IEC 61869-2 for instrument current transformers.
Trusted ABB Metering Technology
ABB CT1M current transformers provide dependable current transformation for indirect electrical measurement, supporting accurate metering and energy monitoring across commercial and industrial power-distribution systems.
