February 19th, 2010

The term “breaker” as it applies to the electrical world usually means one thing, circuit breaker. The circuit breaker is designed to protect circuits. Contrary to what many believe, circuit breakers are not primarily designed to protect people from electric shock. That’s a subject for another article.


Breakers vary. They come in many sizes and types, ranging from the simplest molded case breaker to the most sophisticated types of breakers involving the newest current and voltage monitoring technology.


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Many people ask what part of the breaker is the most vulnerable to wear and tear. That is difficult to say because it depends so much on the environment and the type of use they are subjected to. In a poor environment for instance, (oily or dirty air) breaker mechanisms can become stiff, hampering the physical opening of the breaker. That’s why the exercising of the breaker during scheduled maintenance is so important. The importance of this cannot be overstated. 


Breaker contacts themselves, while designed to open under load conditions, often become pitted causing an increase in contact resistance over time.


A breaker failure can take many forms and can be the result of many things. When a breaker fails in service, it can often lead to expensive down time. MIDWEST is your best source to find a breaker replacement. Since 1977 we have helped many customers through breaker emergencies in short order. Call our expert engineering and breaker support team for your breaker needs. If you are looking for a new, used or reconditioned breaker, we are sure we have what you need.

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