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Siemens 4NC5431-0CH20 Window Current Transformer 1000A/1A

Siemens 4NC5431-0CH20 high-capacity window-type current transformer.

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ManufacturerSiemens
Part number4NC5431-0CH20
Primary Current 1000A
Secondary Current 1A
VA Rating 10 VA
Accuracy Class 1
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12-month warranty
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CAGE: 9NK75
High current capacity Window-type design 1000/1A ratio 10 VA rating Class 1 accuracy Easy installation

The Siemens 4NC5431-0CH20 is a robust window-type current transformer designed for high-current applications. It boasts a primary current rating of 1000A, a secondary rating of 1A, a substantial 10 VA apparent power capacity, and accuracy Class 1. Its open-frame design facilitates simple installation around large conductors or busbars.

This transformer is ideal for monitoring and protection in heavy industrial environments, large power distribution systems, and applications involving significant current loads. The 1000A/1A ratio is particularly useful for precise low-current secondary measurements in high-power systems.

Stanlo Automation, a proud veteran-owned business, is your trusted partner for specialized Siemens industrial components. We ensure quality, reliability, and efficient service for all your automation needs.

Primary Current1000A
Secondary Current1A
VA Rating10 VA
Accuracy Class1
TypeWindow-Type
ManufacturerSiemens
High-power industrial monitoring
Large motor control
Power distribution substations
Heavy-duty electrical systems
Data centers
Grid infrastructure
High-capacity switchgear Industrial electrical distribution Power monitoring systems Siemens automation solutions
Siemens 4NC5431-0CH20 CT 1000A 1A window CT Siemens high current transformer
This 1000A window-type current transformer is suitable for applications requiring measurement of large currents, often used in place of split-core or bar-type CTs in similar high-capacity systems.
Expert tip
When using the 1A secondary, ensure connected measuring or protection devices are rated for 1A input and that the total burden does not exceed the specified 10 VA.
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What is the secondary current rating of the Siemens 4NC5431-0CH20 and why is it 1A?
The Siemens 4NC5431-0CH20 has a secondary current rating of 1A. This 1A secondary is common for high primary current transformers (like 1000A) because it allows for lower burden on the secondary circuit and can simplify integration with certain types of protective relays or meters designed for 1A inputs.