1-1744439-4 is a Terminal Position Assurance (TPA) contact locking plate designed for TE Connectivity's Economy Power II connector series. This component features a 3.96mm [.156] centerline spacing and is available in a discrete configuration with UL 94 V-0 flammability rating. The TPA device provides enhanced terminal retention and prevents accidental contact displacement during mating and unmating operations. It supports position configurations from 2 to 11 positions, making it suitable for a wide range of power distribution applications. This component is commonly used in household appliances, industrial machinery, lighting systems, and commercial building equipment where reliable power connectivity and terminal security are essential.