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Features of marking of circuit breakers

Posted: Tue Feb 18, 2025 5:35 am
by rumiseoexpate1
Automatic switches are manufactured according to the established requirements, which are specified in the state quality standard. Only high-quality materials are used to manufacture these devices. The technical characteristics and features of the product depend on the manufacturing technologies.

Marking of circuit breakers
In order to select a high-quality circuit breaker, it is necessary to understand the meanings of the product marking. Let's consider the marking features using the example of the designation AE 204X M YZ0 NNA 12In U3.

The symbols indicate the following features of the device:



AE 20 is a conventional brand of circuit breaker;
4 is a number that shows the maximum fusion data allowable rated current;
X speaks of built-in splitting conditions within the structure;
6 - this is a signal about the protection of the product body;
M usually denotes the organization of the product;
Y is the designation of the presence of additional contacts;
0 is a number that indicates the absence of an adjustable tripping system in the product;
12In is the overcurrent value;
U3 makes it possible to operate products in macroclimatic climates.
When choosing a circuit breaker, you need to carefully read the markings that are written on the device itself. Using the markings, you can choose the most suitable product to protect a specific electrical system.

If you have any questions, it is recommended to contact qualified specialists who will advise you on all the conditions set. It is worth noting that a consultant can help in choosing a circuit breaker only if he knows about the individual requirements of the client and the desired technical characteristics of the product.