WAGO Through Terminal Blocks TOPJOB® S Through Terminal Blocks are available as single-, double- and triple-deck versions, as well as quadruple-deck terminal blocks for, e.g., electric motor wiring. Your benefits: Single-deck terminal blocks connect conductors ranging from 0.14 to 25 mm2 (24–4 AWG) Clear identification via center marker slots for continuous multi-line marking strips and WMB markers Ex i and Ex e versions available for use in hazardous locations Variants approved for both 800 V (IEC) and 600 V (UL) ratings