Three-phase socket adapter 16 A for PAT (4P)
The adapter enables safety tests of devices (or extension cords) supplied from 16 A three-phase sockets. The unswitchable versions have permanently shorted lines L1, L2, L3 of a three-phase socket, connected to the L line of a single-phase plug. The use of a set of adapters allows testing of 3-phase extension cords, including polarization test. The adapter is 4-pole adapter.