1. Electronic molded case circuit breaker rated limit short circuit breaking capacity Icu: circuit breaker has two breaking capacity index value: rated limit short circuit breaking capacity Icu and rated value short circuit breaking capacity in work IC chip. Do as the characteristic parameter of Ics is not only the breaking capacity of the circuit breaker is easy to take into account, and do as the opening index value, in other words, in a few times after the short-circuit common fault is destroyed, can ensure that all normal work in.

2. Electronic molded case circuit breaker overcurrent protection and breaking capacity: circuit breaker short circuit, the contact point will be quickly broken in order to cause electrical isolation, which is equivalent to the route of the rapid rise of the electrical isolation resistor, which in turn limits the common faults of the electrical flow of the rise. The less time the breaker has to break, the closer the ICs are to Icu, and the better the overcurrent protection actually works. It can also greatly reduce the electromagnetic, electrical utility and thermoelectric effects caused by short-circuit power flow on circuit breakers and electrical equipment, and expand circuit breakers. Daily life.

3. Electronic molded case circuit breaker short-circuit maintenance: short-circuit maintenance indicates an instantaneous short-circuit power jump. Should pay attention to adjust the maintenance preset value immediately after the load change, in order to avoid the preset value is too small and often jumping and jeopardize the quality of switching power supply, or the preset value is too high and can't reasonably maintain the routes and machines and equipment.

4. Load Delay Time Maintenance: Load Delay Time Maintenance means that the load power flow exceeds the limit of the machine and equipment, and there is a risk of ignition of the machine and equipment. The protection device is able to disconnect the switching power supply within a certain period of time. The load has a full thermal storage process and the maintenance posture does not have to be too fast. The safeguard is not effective against short-term overcurrent.

5. Electronic molded case circuit breaker protection: protection is to provide that the leakage current after the circuit breaker is disconnected does not easily lead to damage to staff and machinery and equipment. After several short-circuit trips, the characteristics of the power switch is reduced and the leakage current is enlarged. A leakage current of less than 30mA is a safe leakage current for the body. In harsh natural environments, leakage currents exceeding 300mA for more than 2 hours are likely to destroy the insulation layer and cause a short-circuit to ground, resulting in a fire accident.