Eti-Polam CTR-30 Current Transformer 125/5A 2.5VA Class 0.5

The Eti-Polam CTR-30 current transformer is a precision-engineered device designed for accurate current measurement in low-voltage electrical systems. With a transformation ratio of 125/5A, this component is specifically calibrated to step down high primary currents to a manageable secondary level suitable for measurement instruments and protection relays. Its robust construction ensures consistent performance in demanding industrial and commercial environments, providing reliable data for energy management and circuit monitoring.

Advantages

This current transformer offers high measurement accuracy, which is critical for precise energy billing and system diagnostics. The compact design allows for easy integration into existing electrical panels and switchgear configurations. By utilizing high-quality materials, the device maintains stability under varying load conditions, ensuring long-term operational reliability and minimal maintenance requirements for electrical infrastructure.

Suitable for

• Energy consumption monitoring in commercial buildings
• Industrial power distribution systems
• Integration with ammeters and power meters
• Protection relay applications in low-voltage networks

This device is not suitable for high-voltage applications or environments where the primary current exceeds the rated 125A capacity. It should not be used in circuits where the required accuracy class is higher than 0.5 or where the burden exceeds the 2.5VA rating.

Key specifications

• Transformation ratio: 125/5A
• Accuracy class: 0.5
• Rated power: 2.5VA
• Application: Low-voltage systems

The transformer is installed by passing the primary conductor through the aperture of the device. The secondary terminals must be connected to the measuring instrument or protection device using appropriate wiring. Ensure that the secondary circuit is never left open while the primary circuit is energized to prevent dangerous voltage spikes.

What to consider before purchase

• Verify the primary current of your system matches the 125A rating
• Check that the secondary input of your meter is compatible with 5A
• Ensure the total burden of the secondary circuit does not exceed 2.5VA
• Confirm physical space availability within the electrical cabinet

For optimal performance and safety, ensure all connections are tightened to the manufacturer's specifications and that the secondary circuit is properly grounded according to local electrical regulations.