The possible reasons for the tripping of the electric meter box switch mainly include the following:

Electrical short circuit: If there is a malfunction in the household electrical appliances, such as an internal circuit short circuit, it will cause a sudden increase in current, which will trigger the power meter box switch to trip and protect the circuit.

Excessive circuit load: If multiple high-power appliances are used simultaneously, or if a single appliance has excessive power beyond the circuit's carrying capacity, the meter box switch will automatically trip to prevent circuit overload and damage.

Voltage instability: Large or unstable voltage fluctuations may also cause the meter box switch to trip. In this case, it may be necessary to install a voltage regulator to stabilize the voltage.

Leakage problem: When there is leakage in the circuit, it can also trigger the leakage protection device, causing the switch of the meter box to trip.

Meter box malfunction: Malfunctions in the meter box itself or its switching components may also result in inexplicable tripping.

To solve the problem of tripping of the electric meter box switch, it is recommended to investigate the above reasons one by one and take corresponding solutions. If the problem is complex or cannot be solved, it is recommended to contact a professional electrician for inspection and repair.