1. Before installation, check whether the data on the nameplate of the leakage circuit breaker is consistent with the usage requirements.
2. Do not install too close to the high-current bus and AC contactor.
3. When the operating current of the leakage circuit breaker is greater than 15mA, the equipment shell protected by it must be reliably grounded.
4. The power supply mode, voltage and grounding form of the system should be fully considered.
5. When installing a leakage circuit breaker with short-circuit protection, there must be sufficient arcing distance.
6. The external connection control circuit of the combined leakage circuit breaker should use copper wire with a cross-sectional area of ​​not less than 1.5mm².
7. After the leakage circuit breaker is installed, the original grounding protection measures of the original low-voltage circuit or equipment cannot be removed. At the same time, the neutral line of the load side of the circuit breaker shall not be shared with other circuits to avoid malfunction.
8. The neutral wire and the protective ground wire must be strictly distinguished during installation. The neutral wire of the three-pole four-wire and four-pole leakage circuit breaker should be connected to the circuit breaker. The neutral wire passing through the circuit breaker can no longer be used as a protective grounding wire, nor can it be repeatedly grounded or connected to the enclosure of electrical equipment. The protective ground wire must not be connected to the leakage circuit breaker.
9. The protection range of the leakage circuit breaker should be an independent circuit and cannot be electrically connected to other circuits. Leakage circuit breakers cannot be used in parallel to protect the same circuit or electrical equipment.
10. After installation, operate the test button to check whether the leakage circuit breaker can operate reliably. Under normal circumstances, it should be tested more than three times and it can work normally.

Post time: Jun-23-2022