57.503.0055.6 is a feed-through terminal block designed for DIN rail mounting with screw connection technology. This block accommodates fine stranded wire from 0.5 to 2.5 mm² and solid wire from 0.5 to 4 mm², with AWG equivalents of No. 22-12 AWG for fine stranded and No. 22-12 AWG for solid conductors. The terminal block is rated for 400 V AC with an impulse voltage of 6 kV and a rated current of 24 A, meeting EN 60 947-7-1 and DIN VDE 0611 T1 standards. It features a compact width of 6 mm and wire strip length of 7 mm, making it suitable for space-constrained industrial control panels and electrical distribution systems. The blue color variant provides visual identification for circuit organization and maintenance in complex wiring assemblies.