1)1 pole with or without shunt 2)Silver cadmium Oxide contacts Silver Tin Oxide indium Oxide Contacts 3)UL 508 EN60947.4 Main Uses:Definite Purpose Contactor (Air-conditioner Contactor) is ideal for air conditioning, refrigeration, heating, data processing, welding, elevators, hoists and cranes, lighting, pools and spas and food service equipment. Main Product Data: