2CSG280485R1000 ABB CT1M-6 1200 1200/5A Current Transformer

Why Choose the ABB CT1M-6 1200 Current Transformer?

The ABB CT1M-6 1200 is a through-primary 1200/5 A current transformer designed for indirect measurement of electrical network parameters. Supplied under ABB order code 2CSG280485R1000, it transforms a rated primary current of 1200 A into a proportional 5 A secondary current for compatible energy meters, ammeters and multifunction measuring instruments.

Part of ABB's CT1M current-transformer range, the CT1M-6 1200 is designed in accordance with IEC 61869-2. It provides a best accuracy class of 0.5, with rated burdens of 20 VA at class 0.5, 30 VA at class 1 and 30 VA at class 3, making it suitable for demanding high-current metering and monitoring applications.

The CT1M-6 frame provides a large through-primary aperture capable of accommodating cables up to 65 mm diameter and busbars up to 80 × 10 mm, 60 × 30 mm or 50 × 50 mm. With 126 × 104 × 45 mm dimensions, IP20 protection and a rated frequency of 50–60 Hz, the CT1M-6 1200 is well suited to commercial and industrial switchboards, distribution panels and metering assemblies.

Key Advantages

• 1200/5 A transformation ratio for indirect high-current measurement.
• Best measurement accuracy of class 0.5.
• 20 VA rated burden at class 0.5.
• 30 VA rated burden at class 1.
• 30 VA rated burden at class 3.
• FS 5 current limiting factor.
• Standard 5 A secondary output for compatible measuring equipment.
• Large through-primary opening for substantial cables and busbars.
• Busbar and mounting-foot fixings are supplied as standard.
• Optional CT1M-4/5/6/7 DIN rail mounting adapter provides additional installation flexibility.

Key Features

• ABB CT1M-6 series current transformer.
• 1200 A rated primary current.
• 5 A rated secondary current.
• 1200/5 A current transformation ratio.
• Accuracy class 0.5.
• FS 5 current limiting factor.
• 50–60 Hz rated frequency.
• IP20 protection rating.
• Through-primary current-transformer construction.
• Maximum cable diameter of 65 mm.
• Suitable for busbars up to 80 × 10 mm, 60 × 30 mm or 50 × 50 mm.

Reliable Indirect Current Measurement for High-Current Metering

Current transformers allow electrical measuring equipment to monitor circuits carrying currents beyond the direct-input capability of conventional meters. The ABB CT1M-6 1200 converts a rated 1200 A primary current into a proportional 5 A secondary current, providing a standardised signal for compatible energy meters, ammeters and multifunction monitoring equipment.

With class 0.5 accuracy available at a substantial 20 VA burden, the CT1M-6 1200 supports dependable measurement in high-current distribution systems. Its generous through-primary opening accommodates large cables and busbars, while standard busbar and mounting-foot fixings and the availability of an optional DIN rail adapter provide flexible integration into electrical assemblies.

Typical Applications

• Indirect electrical current measurement up to 1200 A.
• Energy meters with 5 A current-transformer inputs.
• Ammeters and multifunction electrical measuring instruments.
• Main commercial and industrial switchboards.
• High-current electrical distribution panels.
• Large-cable and busbar metering installations.
• Energy monitoring and load-analysis systems.