4NC5123-0DE21

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The Siemens 4NC5123-0DE21 is a high-precision current transformer designed for accurate measurement and monitoring in various electrical applications. With a primary current rating of 250/1 A and a power rating of 5 VA, this transformer ensures reliable performance and efficiency. It belongs to Class 0.5, indicating its high accuracy in current measurement, making it suitable for both commercial and industrial environments. The device is compliant with international standards EN 61869-1 and EN 61869-2, ensuring its compatibility and safety in diverse settings. Its robust construction and design make it an ideal choice for integration into electrical systems where precise current measurement is critical.
Specification Description
Part Number 4NC5123-0DE21
Manufacturer Siemens
Category Current Transformer
Primary Current 250 A
Secondary Current 1 A
Power Rating 5 VA
Accuracy Class 0.5
Standards Complies with EN 61869-1, EN 61869-2, VDE 0414-9-2
Application Suitable for commercial buildings, residential buildings, and industrial applications
Type Window-type current transformer
Maximum Voltage 720 V
Safety Factor FS5
Description The Siemens 4NC5123-0DE21 is a high-precision current transformer designed for accurate measurement and monitoring of electrical currents. It is ideal for use in various environments, including commercial and residential buildings, as well as industrial settings. With a primary current rating of 250 A and a secondary current of 1 A, this transformer ensures reliable performance. Its compact window-type design allows for easy integration into existing systems, making it a versatile choice for electrical measurement needs.

What is the primary function of this part?

The Siemens 4NC5123-0DE21 is a current transformer designed to measure alternating current by producing a reduced current proportional to the current in its primary circuit.

What are the specifications of this current transformer?

This current transformer has a primary current rating of 250 A, a secondary current rating of 1 A, a power rating of 5 VA, and a class accuracy of 0.5.

In what applications can this current transformer be used?

The Siemens 4NC5123-0DE21 is suitable for use in commercial buildings, residential buildings, and industrial settings where accurate current measurement is required.

What standards does this current transformer comply with?

This current transformer complies with standards EN 61869-1, EN 61869-2, and VDE 0414-9-2, ensuring reliable performance and safety.

What is the maximum voltage rating for this current transformer?

The maximum voltage rating for the Siemens 4NC5123-0DE21 is 720 V.

What is the significance of the class accuracy for this current transformer?

The class accuracy of 0.5 indicates that the transformer has a measurement error of ±0.5% at 1 x Ipn and 1.2 x Ipn, making it suitable for precise current measurement applications.

How does the power rating affect the performance of this current transformer?

The power rating of 5 VA indicates the maximum load the transformer can handle while maintaining its accuracy. It is important to match the load to the power rating to ensure optimal performance.

Can this current transformer handle short-duration overcurrents?

Yes, the Siemens 4NC5123-0DE21 is designed to handle short-duration overcurrents without damage, thanks to its specified thermal and dynamic current ratings.

  • Monitoring electrical current in industrial applications.
  • Measuring current in commercial building systems.
  • Ensuring accurate current measurement in residential electrical systems.
  • Supporting energy management systems by providing precise current data.
  • Facilitating the protection of electrical circuits by monitoring current flow.
  • Assisting in the calibration of electrical equipment.
  • Enabling the integration of current measurement in automation systems.
  • Providing data for load analysis and system optimization.
  • Enhancing the safety of electrical installations by detecting overcurrent conditions.

This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.

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