Nowadays, the use of plastic case circuit breakers is becoming more and more widespread, which can be said to be a household name. People concerned should know that after some customers purchase this product, the service life is not guaranteed, and it often breaks down after a period of time, thus causing trouble in maintenance and replacement.

There are only two causes of damage:

1. The quality of the products purchased is not up to standard. Maybe in order to save money, we bought the products with substandard quality.

2. Failure to understand the operating environment and maintenance methods of plastic case circuit breakers has resulted in greatly shortening the service life of the machines.

Next let's understand some environmental requirements and precautions for the use of plastic case circuit breakers:

            HKM1 Molded Case Circuit Breaker

First, you should know that the plastic case circuit breaker has requirements for the ambient temperature and humidity, and the ambient air temperature is controlled in the range of 40 degrees Celsius. The minimum temperature should not be lower than minus five degrees Celsius, and the average temperature should not exceed 35 degrees Celsius, otherwise it will affect the use of plastic case circuit breakers. For atmospheric requirements, the relative humidity should not exceed 50% at 40 C. Humidity can be increased at lower temperatures, but the average monthly humidity should not exceed 90%.

2. Contacts of plastic case circuit breakers mainly rely on manual operation, but if manual operation is more cumbersome, then electric closing can be tried. When the main contact is closed, the Free-Release mechanism locks the main contact in a suitable position. When the coil of the tripper is connected in series with the components of the thermal tripper and the main circuit, the machine starts to work. Only when we fully understand its working principle can we operate and maintain it.

3. When plastic case circuit breaker is used in normal time, once short circuit or serious overload occurs in the circuit, the Over-powered tripper will be able to engage armature at this time, so that the free tripping mechanism will take action and the main circuit will be disconnected. When the circuit is overloaded, the thermal element will bend and the main circuit will be disconnected. When the circuit lacks voltage, the under-voltage tripper releases.

4. The application procedure of plastic case circuit breaker is very simple now. If you buy products with guaranteed quality, you need not worry about the follow-up operation at all. Even if there are problems in the use process, there is no need to worry about it. We can try to follow the instructions for maintenance operations, if they really can not repair themselves, you can directly find professionals to repair. Anyway, there is no need for users to take risks, so it is particularly important to find a company with after-sales security.

Company} - Hangkai Professional Molded Case Circuit Breaker Manufacturer, mainly produces HKM1 Molded Case Circuit Breaker, HKM3 Molded Case Circuit Breaker, providing product maintenance, type selection, knowledge and other services. Welcome to call: 021-57161889.