2CSG280345R1000 ABB CT1M-3 600 Current Transformer 600 A/5 A

Why Choose the ABB CT1M-3 600 Current Transformer?

The ABB CT1M-3 600, order code 2CSG280345R1000, is a 600 A/5 A through-primary current transformer designed for indirect measurement of electrical parameters in metering, monitoring and energy management applications. Part of ABB's Metering Accessories range, it transforms a higher primary current into a standardised 5 A secondary current for compatible electricity meters, network analysers and measuring instruments.

As part of the ABB CT1M current transformer series, the CT1M-3 600 is designed in accordance with IEC 61869-2 and uses a through-primary construction. The monitored cable or horizontal busbar passes through the transformer aperture, providing a practical current sensing solution for electrical distribution panels, switchboards and energy monitoring systems.

With a 600 A rated primary current, 5 A rated secondary current and accuracy class 0.5, the CT1M-3 600 provides a 600:5 transformation ratio for accurate indirect electrical measurement. It provides 5 VA at class 0.5, 7.5 VA at class 1 and 10 VA at class 3, while its CT1M-3 aperture accommodates cables up to 26 mm and horizontal busbars up to 30 × 10 mm or 25 × 15 mm.

Key Advantages

• Purpose-designed current transformer for indirect electrical measurement.
• 600 A/5 A current ratio for higher-current metering and monitoring applications.
• Accuracy class 0.5 supports precise current and energy measurement.
• 5 VA rated output at class 0.5 for accurate metering applications.
• Accommodates cables up to 26 mm and horizontal busbars up to 30 × 10 mm or 25 × 15 mm.
• Busbar and mounting feet fixings are supplied as standard.
• Optional CT1M-3 DIN Rail Adapter enables DIN rail installation where required.

Key Features

• ABB CT1M-3 current transformer series.
• 600 A rated primary current.
• 5 A rated secondary current.
• 600:5 current transformation ratio.
• Accuracy class 0.5.
• 5 VA rated output at class 0.5.
• 7.5 VA rated output at class 1.
• 10 VA rated output at class 3.
• 50–60 Hz rated frequency.
• IP20 protection rating.
• FS 5 current limiting factor.
• Through-primary construction for cable and horizontal busbar installations.

Reliable Indirect Measurement for Electrical Systems

Current transformers allow meters and measuring instruments to monitor electrical circuits carrying currents above their direct measurement range. The transformer produces a proportional secondary current, allowing electrical parameters to be measured without routing the full primary circuit current through the connected measuring instrument.

The ABB CT1M-3 600 converts a nominal 600 A primary current into a 5 A secondary current. Its class 0.5 accuracy, generous conductor aperture and through-primary construction make it suitable for integrating accurate indirect current measurement into commercial and industrial electrical distribution, power monitoring and energy management systems.

Typical Applications

• Electrical energy metering systems.
• Commercial and industrial distribution panels.
• Electrical switchboards and control cabinets.
• Indirect measurement of circuits with a 600 A nominal current.
• Energy monitoring and management systems.
• Current measurement with compatible network analysers, meters and instrumentation.
• Cable and horizontal busbar current measurement.
• Panel-building and electrical distribution applications.