The LBC 1256/00 is an EVAC connection adapter that is installed in series with the primary connection of a loudspeaker unit to make it compliant with BS 5839-8 standards. It contains a thermal fuse that ensures the circuit remains intact even if the loudspeaker is damaged by fire, maintaining system integrity. The connection adapter consists of a 3-pole ceramic screw terminal block and thermal fuse and is packaged with 100 pieces.