NSYTR Warning label for screw terminal blocks, 4mm2, yellow. range: Linergy – product name: TR – product or component type: warning label – device short name: TRA – accessory / separate part category: protection accessory – product compatibility: TRV screw terminal – blade disconnect terminal block, TRV screw terminal – passthrough terminal block, TRV screw terminal – protective earth terminal block, TRV screw terminal – removable carrier disconnect terminal block.