2CSG280725R1000 ABB CT1M-S-30 100 Current Transformer 100/5 A

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.