What is the difference between dual power automatic transfer switch cb and PC

The PC grade is electromagnetic driven, with fast switching (120-250 milliseconds), an arc extinguishing chamber, and a small size. It is a true dual power switch, with a lower price, suitable for switching time requirements that are not very high.

The CB level is composed of two circuit breakers, an electric motor, and a mechanical interlock, with a switching time of 1000-2500 milliseconds. There is no guarantee of safety, but the price is low.

The PC level adopts an integrated conversion structure, excitation drive, simple and reliable, fast action time, generally 100-200MS. The contact is made of silver alloy, with a high separation speed and a specially designed arc extinguishing chamber. Small in size, 1/2 of the CB level has resistance to short-term currents.

The CB level is based on two circuit breakers and is controlled by a controller with a mechanical interlocking electric transmission mechanism to achieve automatic conversion of two power sources.