Phoenix Contact TERM BLOCK PLUG 4POS STR 3.81MM (Model: 1827729) | Reliable Terminal Block Plug 2025-04-12 The Phoenix Contact TERM BLOCK PLUG 4POS STR 3.81MM (Model: 1827729) is a high-quality terminal block plug with 4 positions, 3.81mm pitch, and screw rising cage clamp termination. Ideal for industrial automation, machinery, and telecom applications.