Industrial circuit breakers are available in different forms, shapes, and sizes. There is no one-size-fits-all circuit breaker. Breakers are classified differently based on so many factors. One way of classifying circuit breakers is based on their voltage requirement. Based on this, we have a low voltage industrial circuit breaker and high voltage industrial circuit breaker.

In this article, we will be distinguishing between these two based on a host of factors.

  1. Applications: Low-voltage circuit breakers are majorly used for D.C applications. They are commonly found in subway lines. The most common use case of a low-voltage circuit breaker is where excess electrical power is not needed. Conversely, high-voltage circuit breakers are not used for D.C applications. However, studies are being conducted to find out if it can be used for direct current applications in the future.
  2. Shutting down the arc: By using a remote-controlled electrical motor operator, a low voltage breaker will be able to shut down the arc. It can also do this by using an air circuit breaker mechanism. The same cannot be said of a high-voltage circuit breaker which is highly dependent on mediums like sulphur hexafluoride to shut down the arc.
  3. Mounting: While a high voltage circuit breaker does not need any support, a low voltage circuit breaker has to be mounted on multiple tiers.
  4. Maintenance: The frequency of inspection of high voltage circuit breakers exceeds that of low circuit breakers. High voltage circuit breakers should be checked every 6-12 months while low voltage circuit breakers can be assessed every 1-3 years.
  5. Location: High voltage circuit breakers are usually positioned outside a building because they need air insulation and consume space. However, a low voltage circuit breaker can be positioned within a house.
  6. Cost: High voltage circuit breakers are more expensive due to the higher cost of materials and the amount of money needed to ship it.
  7. Installation: Low voltage circuit breakers are more easily installed than high voltage circuit breakers due to smaller size and weight.

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