MANUAL DUAL-POWER TRANSFER SWITCH

A manual dual-power transfer switch comprises a four-bar linkage, a first movable contact, a second movable contact, a first power terminal electrically connected with the first power supply, a second power terminal electrically connected with the second power supply, a first load static contact and a second load static contact which are accommodated in a switch housing. The movement of the four-bar linkage acts on the first movable contact and the second movable contact at the same time, so that the manual dual-power transfer switch has the following states: a first state in which only the first movable contact is connected between the first power terminal and the first load static contact; Or a second state in which only the second movable contact is connected between the second power terminal and the second load static contact; Or a third state in which the first movable contact is not connected between the first power terminal and the first load static contact and the second movable contact is not connected between the second power terminal and the second load static contact.