主权项 |
1. An electrical device, comprising:
a first and a second switching contact; a first set of terminals comprising a first common terminal, a first normally closed terminal, and a first normally open terminal, wherein energizing the first and second switching contacts causes the first common terminal to switch from connecting to the first normally closed terminal to connecting to the first normally open terminal; a second set of terminals comprising a second common terminal, a second normally closed terminal, and a second normally open terminal, wherein energizing the first and second switching contacts causes the second common terminal to switch from connecting to the second normally closed terminal to connecting to the second normally open terminal; a third and a fourth switching contact; a third set of terminals comprising a third common terminal, a third normally closed terminal, and a third normally open terminal, wherein energizing the third and fourth switching contacts causes the third common terminal to switch from connecting to the third normally closed terminal to connecting to the third normally open terminal; a fourth set of terminals comprising a fourth common terminal, a fourth normally closed terminal, and a fourth normally open terminal, wherein energizing the third and fourth switching contacts causes the fourth common terminal to switch from connecting to the fourth normally closed terminal to connecting to the fourth normally open terminal; a fifth set of terminals comprising a fifth common terminal, a fifth normally closed terminal, and a fifth normally open terminal, wherein energizing the first and second switching contacts causes the fifth common terminal to switch from connecting to the fifth normally closed terminal to the fifth normally open terminal; a sixth set of terminals comprising a sixth common terminal, a sixth normally closed terminal, and a sixth normally open terminal, wherein energizing the third and fourth switching contacts causes the sixth common terminal to switch from connecting to the sixth normally closed terminal to the sixth normally open terminal; a persistent connection between each of the switching contacts and a respective common terminal of the terminal sets; a persistent connection between the first normally closed terminal and the third switching contact; a persistent connection between the first normally open contact and the fourth normally open contact; a persistent connection between the second normally open contact and the third normally open contact and the fourth normally closed contact; a first output in connection with the first normally open terminal and in connection with the fourth normally open terminal; a second output in connection with the third normally closed terminal; a third output in connection with the second normally open terminal and in connection with the third normally open terminal and in connection with the fourth normally closed terminal; a first input connected to the first switching contact; a second input connected to fifth common terminal; and a third input connected to the second switching contact, wherein the first, second and third outputs are configured for connection to a load, and wherein the first, second, and third inputs are configured for connection to two hot outputs of an electrical power source. |