A polar relay is provided including: an insulation housing, an armature assembly, and a coil assembly. The armature assembly is pivotably mounted within the insulation housing. The armature assembly is rotatable between a first position and a second position, with one end of the iron core in contact with one armature of the pair of armatures while the other end of the iron core is spaced apart from and thus out of contact with the pair of armatures by corresponding gaps therebetween. The gaps are provided without providing a magnetic isolation plate between or applying an isolation layer onto contact layers of the armature and the iron core. The armature assembly is rotatable around a vertical pivot axis, avoiding changing a position of the pivot point during the movement of the iron core, stabilizing the action of the armature assembly, and ensuring the continuity of the action of the product.

An electrical contactor has a first terminal having a fixed member with at least one fixed electrical contact, a second terminal, and at least one movable electrical contact in electrical communication with the second terminal. A dual-coil actuator is also provided and has a first drive coil drivable to open and close the movable and fixed electrical contacts, and a second non-drive coil feedback connected to induce a reverse flux to temper and stabilize a net flux. Control of a delay time of the opening and closing electrical contacts is thus possible, so as to be at or adjacent to a subsequent or next zero-crossing of an associated AC load current waveform.

A polar relay is provided including: an insulation housing, an armature assembly, and a coil assembly. The armature assembly is pivotably mounted within the insulation housing. The armature assembly is rotatable between a first position and a second position, with one end of the iron core in contact with one armature of the pair of armatures while the other end of the iron core is spaced apart from and thus out of contact with the pair of armatures by corresponding gaps therebetween. The gaps are provided without providing a magnetic isolation plate between or applying an isolation layer onto contact layers of the armature and the iron core. The armature assembly is rotatable around a vertical pivot axis, avoiding changing a position of the pivot point during the movement of the iron core, stabilizing the action of the armature assembly, and ensuring the continuity of the action of the product.