2CSG280465R1000 ABB CT1M-6 800 Current Transformer 800 A/5 A

Why Choose the ABB CT1M-6 800 Current Transformer?

The ABB CT1M-6 800, order code 2CSG280465R1000, is an 800 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-6 800 is designed according to IEC 61869-2. Its through-primary construction supports cable and busbar installations, with mounting feet and busbar fixing accessories supplied as standard and an optional DIN rail mounting adapter available for additional installation flexibility.

With a 800 A rated primary current, 5 A rated secondary current and accuracy class 0.5, the CT1M-6 800 provides an 800:5 transformation ratio for accurate indirect electrical measurement. It provides 15 VA at class 0.5, 15 VA at class 1 and 15 VA at class 3, while its large aperture accommodates cables up to 65 mm and busbars up to 80 × 10 mm, 60 × 30 mm or 50 × 50 mm.

Key Advantages

• Purpose-designed current transformer for indirect electrical measurement.
• 800 A/5 A current ratio for higher-current metering and monitoring applications.
• Accuracy class 0.5 supports precise current and energy measurement.
• 15 VA rated output at class 0.5 for demanding metering applications.
• Large through-primary aperture accommodates cables up to 65 mm.
• Suitable for busbars up to 80 × 10 mm, 60 × 30 mm or 50 × 50 mm.
• Mounting feet and busbar fixing accessories are supplied as standard, with an optional DIN rail adapter available.

Key Features

• ABB CT1M-6 current transformer series.
• 800 A rated primary current.
• 5 A rated secondary current.
• 800:5 current transformation ratio.
• Accuracy class 0.5.
• 15 VA rated output at class 0.5.
• 15 VA rated output at class 1.
• 15 VA rated output at class 3.
• FS 5 current limiting factor.
• 50–60 Hz rated frequency.
• IP20 protection rating.
• Through-primary construction for cable and busbar installations.

Reliable Indirect Measurement for Higher-Current 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-6 800 converts a nominal 800 A primary current into a 5 A secondary current. Its class 0.5 accuracy, 15 VA class 0.5 output and large 65 mm cable aperture make it suitable for accurate indirect current measurement in commercial and industrial electrical distribution, power monitoring and energy management systems using substantial cables or busbars.

Typical Applications

• Electrical energy metering systems.
• Commercial and industrial distribution panels.
• Electrical switchboards and control cabinets.
• Indirect measurement of circuits with an 800 A nominal current.
• Energy monitoring and management systems.
• Current measurement with compatible network analysers, meters and instrumentation.
• Large cable and busbar current measurement.
• Panel-building and electrical distribution applications.