(1) After the circuit is connected, check whether the wiring is correct. This can be checked by pressing the test button. If the circuit breaker can be disconnected correctly, it means that the leakage protector is installed correctly. Otherwise, check the circuit and eliminate the fault. After the leakage protector is put into operation, the user should check whether the circuit breaker is operating normally after a period of time.
(2) The leakage, overload and short-circuit protection characteristics of the circuit breaker are set by the manufacturer and cannot be adjusted at will to avoid affecting the performance.
(3) The function of the test button is to check the operating status of the circuit breaker in the closed and energized state after the circuit breaker is newly installed or has been in operation for a certain period of time. Press the test button and the circuit breaker can be disconnected, indicating that the operation is normal and can continue to be used; if the circuit breaker cannot be disconnected, it means that the circuit breaker or the line is faulty and needs to be repaired.
(4) If the circuit breaker is disconnected due to a fault in the protected circuit (leakage, overload or short circuit), the operating handle is in the tripping position (middle position). After finding out the cause and eliminating the fault, the operating handle should be pulled down (i.e. placed in the "off" position) first, and the operating mechanism should be "re-buttoned" before the closing operation can be performed (please note the different meanings of the three positions of the circuit breaker operating handle).
(5) After the circuit breaker is disconnected due to a short circuit, the contacts need to be checked. If the main contacts are severely burned or have pits, they need to be repaired.
(6) The four-pole leakage circuit breaker must be connected to the neutral line to ensure the normal operation of the electronic circuit.
(7) The load wiring of the leakage circuit breaker must pass through the load end of the circuit breaker. Any phase line or neutral line of the load is not allowed to pass through the leakage circuit breaker, otherwise it will cause artificial "leakage" and cause the circuit breaker to fail to close, resulting in "false operation".