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MQ3 Series
  • Application
  • Performance
  • Specification
  • Overall and mounting dimensions
  • Product
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1. Application

MQ3 series dual power automatic transfer switches (follow brief as setting) is one of adopted international technology developed by our company. The setting is suits for AC 50Hz, rated working voltage is 400V, rated current 6A-100A and under dual power supply system. It has over voltage, under voltage, lost phases protection function. The setting mainly used for hospital, shopping center, bank, and chemical industry, metallurgy, high building, military facilities.


Transfer switch is composed with 2 sets MM5-63 MCB and motor mechanism rotating device, through circuit breakers to inspect the two way power. When the circuit abnormal, the controller will make a logic determine with the inspect result. According controller order to drive the operate mechanism on or off, thereby supply electric security and steablity.

3.Specification4.Overall and mounting dimensions