Abstract: A relay combination includes a first relay having a first double throw contact set including a first normally closed contact, a first normally open contact and a first armature for contacting the first normally open and closed contacts. A first armature coil manipulates the first armature. A second relay includes a second double throw contact set including a second normally closed contact, a second normally open contact and a second armature for contacting the second normally open and closed contacts. A conductor conducts an alternating current signal to the first and second normally closed contacts. The first and second armatures are electrically coupled to one another through a conductor electrically isolated from the first and second normally closed contacts. A latching circuit is included comprising first and second input circuits for latching the first relay upon receiving a signal on the first input circuit and latching the second relay upon receiving a signal on the input circuit.