Leaks in electrical systems are dangerous. For this reason, it is necessary to detect leakage currents and ensure safety. Residual current relay is used for these operations. In this way, it prevents material and moral damage.
What is a residual current relay?
Residual current relay is a very important safety device that detects leakage current in electrical systems and helps prevent possible electric shock, fire or device damage by cutting off this current. This device increases safety, especially in humid environments or areas near water. The residual current relay automatically cuts off the circuit when there is a current difference greater than normal in the electrical circuit. In this way, life and property safety is ensured by being protected from electrical hazards.
What does a residual current relay do?
Residual current relay is a safety device that helps prevent serious electrical hazards by detecting leakage currents that may occur in electrical installations. This relay detects the non-normal, that is, leakage current in the electrical circuit and immediately detects this situation and cuts the circuit. In this way, electric shock, fire or device damage is prevented. Its use is especially critical in areas close to water or in humid environments.
How many amperes should the residual current relay have?
The amperage value of the residual current relay varies depending on the intended use and the characteristics of the electrical system. In homes and small commercial areas, a leakage current relay with a value of 30 mA (milliamps) is generally used. This is sufficient to prevent an amount of leakage current that could harm human health. In larger industrial facilities, relays with higher amperage values, usually 100 mA or 300 mA, may be preferred. These types of relays are used in larger systems to protect wider leakage current levels.
When selecting a relay, attention should be paid to the total capacity of the installation, the danger level of the leakage current and the regulations. Therefore, the correct relay type must be selected according to the requirements of the system.