To know why the plastic case 16 amp 1p mcb circuit breaker does not break, you first need to understand the following:
1, molded case circuit breaker whether the service life is too long: if the service life is not very long, you can rule out the internal metal mechanical parts of the circuit breaker rust and aging fault, from the circuit breaker working mode and wiring above to consider. For example, the circuit breaker connection is loose, resulting in the internal detection unit can not detect the circuit fault, or the rated short-circuit current is too large, in the conventional small current fault such as short circuit can not be disconnected in time to ensure line safety. If the service life is longer, we have to consider the aging of internal parts, or the circuit breaker has reached the maximum service life of the electrical or mechanical life, the internal has been seriously damaged.
2, molded case circuit breaker in high current installation environment, for safety reasons, will increase the torque of the handle to avoid accidental closing or power, then need to be equipped with a special handle for operation, buy the handle.
, the cause of plastic case 16 amp 1p mcb circuit breaker can not be disconnected or closed may also be out of the internal mechanical parts or other components above, then cut can not disassemble the circuit breaker, timely reported to the purchase of the business can be replaced, such as beyond the business guarantee period can negotiate with the business repair, or buy the replacement.
4, different plastic shell type circuit breakers have different protection mechanisms, such as normal tripping of circuit breakers due to line fault, resulting in not closing, belongs to the normal phenomenon, please electrician troubleshooting.
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