... terminal block 1,Switch power field, 2,Pitch:3.5,3.96,3.81,5.0,5.08,6.35,7.5,7.75mm 3 ... UL, VDE,CQC, wire protector terminal ... blocks(CA series) Main usage: Switch power field, connect tightly, big contacted area, the insulating house strong, durable, pressure,vibration. Pitch: 3 ... .5,3.96,3.81,5.0,5.08,6 ...