DZ47LE / 2P is a bipolar leakage and air switch, the breaking is 2 pole linkage, so zero, FireWire can be chained. If the DZ47LE / 1P is a single pole leakage and air switch, the breaking is a pole, only by L then FireWire, N then zero line. Can not be wrong, otherwise can not reach the leakage protection.
Gas switch should be because the circuit current is too large (short circuit or electrical total power may be too large, may cause excessive current) and turn off the switch automatically. Cut off the circuit leakage protector also detects the circuit through the ground and the difference between the size of the current to control the switch, when the fire there is a leakage (single-wire electric shock) through the household hot wire current, and through the household into the ground current is small , Causing the magnetic flux around the leakage protector core changes, and automatically turn off the switch. Cut off the circuit.
Leakage protection switch: It has two inside the same size, the same number of coil winding, with a core, the two coils were string in the circuit of the fire and zero line, when there is no leakage, the two windings Of the magnetic field offset each other, so no matter how much current flows (of course, does not exceed the maximum rated current), the resulting magnetic field are offset, will not make the magnet pull the armature, the circuit is not open, but when the line leakage, the FireWire Current is divided into two directions, one for the zero line, and the other for the leakage at this time, it triggered the electromagnet on the two coils of different currents, resulting in a magnetic field, attracting armature, disconnect the circuit to protect the electric shock or Wire safety! ! At the same time, the general leakage protector has a test button, the principle is to take the initiative to produce magnetic field to see whether the circuit breaker can be automatically shut down! ! After troubleshooting, dial the switch that is working! !
Air switch, also known as automatic switch, low voltage circuit breaker. The principle is: When the operating current exceeds the rated current, short circuit, loss of pressure and other circumstances, automatically cut off the circuit. At present, the family switch has a knife switch with ceramic insert insurance (has been eliminated) or air switch (with leakage protection of small circuit breakers). At present, DZ series air switches are commonly used in the household. The following models / specifications are commonly used: C16, C25, C32, C40, C60, C80, C100, C120, etc., where C represents the tripping current, Current of 32 amps, the general installation of 6500W water heater to use C32, install 7500W, 8500W water heater to use C40 empty open.
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