Linergy NEMA sectional terminal blocks are for terminating wires in a control panel and are designed to NEMA standards. This terminal block has a box lug connector for use with solid or stranded copper wires from #12 through 1/0 AWG. Each box lug terminal is approved for use with various wire combinations. These thermal units will trip in 20 seconds or less on overload conditions. The nylon block is molded in the natural color of nylon (off white). This block is UL component recognized for up to 180 Amps and CSA certified for up to 170 Amp. Both UL and CSA have the block rated at up to 600 VAC or VDC.