Not the same, according to the application of different places leakage protector action current will also be different.
10mA-16mA leakage switch is applied to hospitals, operating rooms, sick beds. 30mA leakage switch is applied to personal electric shock protection, that is, ordinary residential houses. 100mA leakage switch is applied to meters or signal base stations. 300mA-500mA leakage switch is applied to gas stations and other flammable and explosive places of fire protection.
Below 30ma current the human body can get rid of independently does not constitute a fatal, so the household leakage protector rated leakage action current is generally 30ma. the human body's perception of the current value of male 1.1mA, female 0.7mA; get rid of the current of male 16mA female 10.5mA, the children to be smaller than adults.
Life-threatening current in a relatively short period of time is caused by the current, from two aspects of understanding, one is the current up to 50mA will cause ventricular fibrillation, life-threatening, and more than 100mA current will be the center of the death of a person, the 30mA will not be life-threatening for the time being. Every contraction and expansion of the human heart has a 0.1-second interval, and in this 0.1 second, the heart is most sensitive to the current, if the current passes through the heart in this instant, even if the current is small, it will cause the heart to fibrillate, causing danger.
Extended information:
Principles of leakage protector selection
Selected according to the purpose of use and the place where the electrical equipment is located
1, the protection of direct contact with electrocution
Because of direct contact with electrocution of the hazards of the greater, caused by the consequences of the seriousness of the selection of a more sensitive Leakage circuit breaker, electric tools, mobile electrical equipment and temporary lines, should be installed in the circuit of the action current of 30mA, action time within 0.1s leakage circuit breaker. For residential houses with more household appliances, it is best to install it behind the incoming energy meter.
If once electrocuted is easy to cause secondary injuries (such as working at height), should be installed in the circuit with an action current of 15mA, action time within the US leakage circuit breaker. For electrical medical equipment in hospitals, earth leakage circuit breakers with an action current of 6mA and an action time within US should be installed.
2, indirect contact electric shock protection
Different places of indirect contact electric shock, can cause different degrees of personal injury, so different places should be installed in different leakage circuit breaker. For easy electrocution of the hazardous places, the requirements of the leakage circuit breaker with higher sensitivity. In the wet place than in the dry place of electrocution risk is much greater, generally should be installed for the action current of 15-30mA, action time within 0.1s of the earth leakage circuit breaker. For electrical equipment in the water, should be installed with an action current of 6-l0mA, action time within the US leakage circuit breaker.
For the operator must stand on metal objects or metal containers in the electrical equipment, as long as the voltage is higher than 24V, should be installed with an operating current of 15mA or less, the action time within the US leakage circuit breaker. For fixed electrical equipment with voltage of 220V or 380V, when the shell grounding resistance is below 500fZ, the single unit can be installed with an action current of 30mA and an action time within 0.19 of the earth leakage circuit breaker. For the rated current of 100A or more large electrical equipment or power supply circuit with multiple electrical equipment, can be installed with an action current of 50-100mA earth leakage circuit breaker, the grounding resistance of the electrical equipment in the following 1000, can be installed with an action current of 200-500mA earth leakage circuit breaker. Strong>Reference:
Baidu Encyclopedia-Leakage Protector