The role of air circuit breakers

air circuit breaker  is a kind of circuit breaker. The insulating medium is air. It is a low-voltage switch with manual (or electric) closing, a lock to maintain the closing position, a tripping mechanism to trip and an arc extinguishing device. It is currently widely used in AC and DC devices below 500V. It is used for connecting, breaking and carrying rated working current and fault current such as short circuit and overload.

The main function of the air circuit breaker is generally under normal circumstances, the armature of the over-current release is released; once a serious overload or short-circuit fault occurs, the coil connected in series with the main circuit will generate a strong electromagnetic attraction to move the armature to the main circuit. Under the suction and the top open the lock hook, so that the main contact is disconnected. The work of the undervoltage release is just the opposite. When the voltage is normal, the electromagnetic attraction attracts the armature, and the main contact can be closed. Once the voltage drops severely or the power is cut off, the armature is released to open the main contacts. When the power supply voltage returns to normal, it must be re-closed before it can work, realizing the voltage loss protection. The circuit breakers provided by Goline.com are generally to better protect the safety of the family, but also to adapt to the safe use of electricity by the masses.

Each line of the air switch must have a separate air switch. In high-power rooms, such as kitchens and bathrooms, the line above 4 square millimeters must reach 20A, and the general lamp head line only needs 16A. Each line has specific specifications. When checking whether the air switch is normal, you should ask a professional to use a leakage phase detector to detect it. If the air switch is in the normal protection state, when testing, the air switch of each circuit will trip separately, and the leakage protector will also trip together. If the air switch is in an abnormal state, only the main switch trips, the individual air switch does not trip, and the leakage protector does not trip.

Under normal circumstances, the armature of the over-current release is released; once a serious overload or short-circuit fault occurs, the coil connected in series with the main circuit will generate a strong electromagnetic attraction to attract the armature downward and open the lock hook. Open the main contacts. The work of the undervoltage release is just the opposite. When the voltage is normal, the electromagnetic attraction attracts the armature, and the main contact can be closed. Once the voltage drops severely or the power is cut off, the armature is released to open the main contacts. When the power supply voltage returns to normal, it must be re-closed before it can work, realizing the voltage loss protection.