Repair Steps and Recommendations for Auxiliary Switch Poor Contact Issues

2025-11-28 09:27:00

When dealing with poor contact problems in the auxiliary switch of a vacuum circuit breaker, the first step is to identify the cause of the fault. You can determine this by measuring the resistance of the auxiliary switch—if the resistance value is abnormal, it may indicate poor contact. Next, check whether the terminal connections are loose or oxidized; if so, re-tighten or clean them. It is also essential to ensure that the wires are not worn or broken.

If the above steps do not resolve the issue, consider replacing the auxiliary switch. When installing the new component, make sure the connections are secure. Finally, perform a functional test on the repaired auxiliary switch to ensure proper operation. Regular maintenance and inspection can effectively prevent such problems from recurring.