Why Choose the ABB CT1M-2 150 Current Transformer?
The ABB CT1M-2 150 is a compact and reliable 150/5 A current transformer designed for indirect measurement of electrical network parameters in low-voltage distribution systems. Supplied under ABB order code 2CSG280265R1000, it forms part of the ABB CT1M current transformer series and is designed in accordance with IEC 61869-2.
With a rated primary current of 150 A and a rated secondary current of 5 A, the CT1M-2 150 converts the primary circuit current into a proportional standard secondary signal for compatible electricity meters, ammeters, power analysers and monitoring equipment. Its class 0.5 accuracy and 2.5 VA rated output at class 0.5 support accurate electrical measurement in commercial and industrial installations.
The CT1M-2 150 uses a through-primary design for straightforward integration into electrical distribution equipment. Its compact 65 × 45 × 40 mm construction, IP20 degree of protection and 50–60 Hz rated frequency make it a practical metering accessory for switchboards, distribution panels and energy monitoring systems.
Key Advantages
- Reliable 150/5 A current transformation for indirect electrical measurement.
- Class 0.5 accuracy supports precise metering applications.
- 2.5 VA rated output at accuracy class 0.5.
- Standard 5 A secondary output for compatible measuring equipment.
- Through-primary construction simplifies installation around the primary conductor.
- 50–60 Hz rating suits standard low-voltage electrical networks.
- Compact 65 × 45 × 40 mm dimensions minimise panel space requirements.
- Designed in accordance with IEC 61869-2 for current transformers.
Key Features
- ABB CT1M-2 current transformer series.
- 150 A rated primary current.
- 5 A rated secondary current.
- 150/5 A transformation ratio.
- Class 0.5 measurement accuracy.
- 2.5 VA rated output at class 0.5.
- 5 VA rated output at class 1.
- 5 VA rated output at class 3.
- 50–60 Hz rated frequency.
- IP20 degree of protection.
- Compact through-primary construction.
Current transformers allow electrical meters and monitoring instruments to measure circuits carrying currents above their direct-input range. The ABB CT1M-2 150 transforms a primary current of up to 150 A into a proportional 5 A secondary current, allowing compatible equipment to perform indirect measurement of electrical network parameters.
The CT1M range is designed for current measurement in electrical distribution systems. Its through-primary construction enables the primary conductor to pass through the transformer while the standardised secondary output can be connected to suitable metering, measurement and monitoring equipment.
Typical Applications
- Electrical energy metering systems.
- Main and sub-distribution switchboards.
- Low-voltage electrical distribution panels.
- Power and network monitoring systems.
- Building energy management installations.
- Industrial electrical measurement systems.
- Panel-mounted ammeters and power analysers.
- Commercial and industrial energy monitoring.
