Why Choose the ABB CT1M-10 4000 Current Transformer?
The ABB CT1M-10 4000 is a high-capacity 4000/5 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 electrical measuring instruments.
Designed in accordance with IEC 61869-2, the CT1M-10 4000 provides a best accuracy class of 0.5 for dependable metering of substantial electrical loads. Its through-primary construction accommodates cables and horizontal or vertical busbars, making it suitable for main distribution boards, industrial switchboards and high-current energy-monitoring installations.
With a rated primary current of 4000 A, rated secondary current of 5 A and rated frequency of 50–60 Hz, the CT1M-10 4000 is designed for demanding electrical measurement applications. It provides a rated output of 60 VA at Class 0.5, Class 1 and Class 3, while the CT1M-10 frame accommodates cables up to 86 mm and busbars up to 100 × 30 mm, 80 × 50 mm or 70 × 60 mm.
Key Advantages
- High-capacity 4000/5 A current transformation for indirect electrical measurement.
- Best accuracy class 0.5 for precise metering applications.
- 60 VA rated output at Class 0.5 for demanding measuring circuits.
- Designed in accordance with IEC 61869-2.
- Through-primary design suitable for cable and busbar installations.
- Accommodates cables up to 86 mm through the primary opening.
- Busbar and mounting-foot fixings are supplied as standard for convenient installation.
Key Features
- ABB CT1M-10 current transformer series.
- 4000 A rated primary current.
- 5 A rated secondary current.
- 4000/5 A transformation ratio.
- Accuracy class 0.5 with 60 VA rated output.
- 60 VA rated output at Class 1.
- 60 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 High-Current Distribution
Current transformers allow measuring equipment to monitor high electrical currents without routing the full primary current directly through the measuring instrument. The ABB CT1M-10 4000 converts a 4000 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-10 through-primary format provides installation flexibility for cables and busbars, while its Class 0.5 accuracy and 60 VA rated output make this model particularly suitable for substantial metering circuits in high-current commercial and industrial installations.
Typical Applications
- High-current electrical energy metering systems.
- Main low-voltage distribution switchboards.
- Industrial electrical distribution panels.
- Indirect current measurement with ammeters.
- Multifunction electrical measuring instruments.
- Energy monitoring and management systems.
- High-current commercial and industrial power-distribution installations.
