Security and other aspects of superiority is unmatched contact switch

Non-contact switch in electromagnetic compatibility, reliability, security, and other aspects of the superiority of the contact switch is unmatched. Non-contact switch is used to control thyristor, so it is done internally in the PN junction turn-on and shut-off, and there will be no spark, make up the contact switch mcb circuit breaker, when there is not Electric energy meter to avoid excessive current occurs spark or breakdown of the high voltage circuit, the air, resulting in malfunction. Non-contact switch is also very good air circuit breaker to high pressure, such as the number of large motor starting, turning the rotor inertia from rest becomes very large, resulting in large starting current (roughly equal to the short-circuit current), shutdown due to inertia continue to operate, will result in very high voltage, non-contact switch can be applied to this.