WLM6LY-630A-4300 4P WLM6L Series earth leakage protection type circuit breaker 400V 630a 3 poles 4 Poles mccb breaker

Test Function: Many RCCBs are equipped with a test button that allows users to simulate a fault condition and verify the proper operation of the device. Regular testing of RCCBs is essential to ensure that they are functioning correctly and providing the intended level of protection.

In conclusion, RCCBs are essential safety devices that play a critical role in protecting against electrical hazards. Their ability to detect and interrupt abnormal current flows, along with their numerous advantages such as enhanced safety, protection against ground faults, compliance with safety standards, versatility, and ease of installation and maintenance, make them indispensable in electrical installations. By understanding the advantages and functions of RCCBs, individuals and organizations can make informed decisions about incorporating these devices into their electrical systems to ensure the highest level of safety and protection.