Why Choose the ABB CT1M-S-30 100 Current Transformer?
The ABB CT1M-S-30 100 is a compact 100/5 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 the primary current 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-S-30 100 provides Class 1 accuracy for dependable electrical measurement. Its through-primary construction is designed for busbar conductors, providing a practical solution for switchboards, distribution panels and energy-monitoring installations where indirect measurement is required.
With a rated primary current of 100 A, rated secondary current of 5 A and rated frequency of 50–60 Hz, the CT1M-S-30 100 provides a 1.5 VA rated output at Class 1 and 3.5 VA at Class 3. The CT1M-S-30 format accommodates a vertical busbar section up to 33 × 23 mm, while its compact 106 × 93 × 40 mm body supports space-efficient installation.
Key Advantages
- Reliable 100/5 A current transformation for indirect electrical measurement.
- Class 1 accuracy for compatible metering applications.
- 1.5 VA rated output at Class 1.
- Designed in accordance with IEC 61869-2.
- Through-primary design suitable for busbar installations.
- Compact construction for integration into electrical distribution equipment.
- IP20 protection rating for installation within suitable electrical enclosures.
Key Features
- ABB CT1M-S-30 current transformer series.
- 100 A rated primary current.
- 5 A rated secondary current.
- 100/5 A transformation ratio.
- Class 1 best accuracy class.
- 1.5 VA rated output at Class 1.
- 3.5 VA rated output at Class 3.
- 50–60 Hz rated frequency.
- IP20 protection rating.
- Through-primary construction with a maximum vertical busbar section of 33 × 23 mm.
Reliable Current Measurement for Electrical Metering
Current transformers allow measuring equipment to monitor electrical current without routing the full primary current directly through the measuring instrument. The ABB CT1M-S-30 100 converts a 100 A primary current proportionally to a standard 5 A secondary signal, enabling compatible ammeters, multifunction meters and energy meters to perform indirect electrical measurement.
The CT1M range is designed for electrical distribution and energy-efficiency applications where dependable current measurement is required. The compact CT1M-S-30 through-primary format is particularly suitable for busbar installations, while its defined accuracy and VA ratings support correct matching with compatible metering circuits.
Typical Applications
- Electrical energy metering systems.
- Low-voltage distribution switchboards.
- Industrial electrical distribution panels.
- Indirect current measurement with ammeters.
- Multifunction electrical measuring instruments.
- Energy monitoring and management systems.
- Commercial and industrial busbar installations.
