NSYTR end cover for screw single-level terminal block 1×1, 2,5 to 10mm2 BL. range: Linergy – product name: Linergy TR – device short name: TRA – accessory / separate part category: insulation accessory – product compatibility: TRV screw terminal – blade disconnect terminal block, TRV screw terminal – passthrough terminal block, TRV screw terminal – protective earth terminal block – thickness: 2.2 mm.