• Main circuit breaker installation   |  175/= Tk.
• Main circuit breaker repair   |  175/= Tk.

Electric circuit breakers are critical components of any electrical system. They are designed to protect electrical systems and appliances from damage caused by overloading, short-circuits, and other electrical faults. A well-maintained circuit breaker can help ensure the safety and reliability of an electrical system.

One of the most important aspects of circuit breaker maintenance is regular servicing. This involves testing and inspecting the breaker to ensure that it is functioning properly and that it can perform its intended task of protecting the electrical system. The following are some important considerations for electric circuit breaker servicing:

• Visual Inspection: Before performing any tests, the breaker should be visually inspected for any signs of damage, such as cracks or burn marks. If there is visible damage, the breaker should be replaced immediately.
• Trip Testing: Trip testing involves testing the breaker's ability to trip when an over-current is detected. This test is performed by temporarily increasing the current in the circuit and verifying that the breaker trips as designed.
• Insulation Resistance Testing: This test measures the resistance of the breaker's insulation. The test should be performed regularly to ensure that the insulation is not degraded, which can cause the breaker to malfunction.
• Dielectric Testing: Dielectric testing measures the electrical strength of the breaker's insulation. This test is performed to ensure that the breaker can withstand the voltage that it is rated for.
• Contact Resistance Testing: Contact resistance testing measures the resistance of the breaker's contacts. This test is performed to ensure that the breaker can close and open properly, which is critical for its ability to trip when needed.
• Trip Unit Calibration: Trip unit calibration involves adjusting the breaker's trip settings to ensure that it trips at the correct current. This test is performed to ensure that the breaker is functioning properly and that it will trip when needed to protect the electrical system.

It is important to follow the manufacturer's recommendations for the frequency of servicing for electric circuit breakers. This can vary depending on the type of breaker, the environment in which it is used, and the amount of use it receives. In general, circuit breakers should be serviced every two to five years, or more frequently if they are subjected to harsh conditions or heavy use.

In conclusion, regular servicing of electric circuit breakers is essential for ensuring the safety and reliability of an electrical system. Proper servicing should include visual inspection, trip testing, insulation resistance testing, dielectric testing, contact resistance testing, and trip unit calibration. By following these guidelines, electric circuit breakers can be kept in good working condition and continue to perform their intended task of protecting electrical systems and appliances.