3 pole 3 phase AC magnetic contactor with 115A rated current, is a form of electrical relay found on electric motors. It is used for long distance breaking circuit and frequently starting or controlling motors.
Tips: Working principle of AC magnetic contactor
The working principle of the AC magnetic contactor is to use the electromagnetic force and the spring force to cooperate to realize the connection and disconnection of the contacts. The AC contactor has two working states: power-off state (release state) and energized state (action state). When the attracting coil is energized, the static iron core generates electromagnetic attraction, the armature is attracted, and the connecting rod connected with the armature drives the contact action, so that the normally closed contact breaker is in an energized state. When the attracting coil is powered off, the electromagnetic attraction disappears, the armature is reopening, so that the normally open contact is closed, and released under the action of the position spring, all the contacts are reset accordingly, and the contactor is in a power-off state.