Mini OS Fused Switch Disconnector Lockable handles with 'Test' position are available Fuse carrier protected to IP20 The fuse covers can not be removed when the switch is in the 'ON' position Panel or DIN rail mounting Auxiliary contacts may be fitted to the side ABB OS Range A fused switch disconnector provides a cost effective means of short circuit protection, together with circuit isolation. The choice of fuse rating determines the level of protection, the maximum value is determined by the fused switch disconnector. These items have been tested in accordance with EN 60947-3.