NDC-2X definite purpose contactors (1-pole ,20A ) are ideal for HVAC air conditioning,r efrigeration, heating, NDC-2X definite purpose contactors (1-pole ,20A ) are ideal for HVAC air conditioning, refrigeration, heating, data processing, welding, elevators, hoists & cranes, lighting, pools & spas and food service equipment.2 Ordering informationNDC-1XU00AACNaidian GroupContactorsPackaging Pole ...