Auxillary contact blocks may be fitted to 'OS Fused Switched Disconnectors' to provide additional contacts for monitoring and test purposes.

OS Mini types can only be used with the 'OS Mini Fused Switch Disconnectors', they are located either above or below the switch mechanism
The Standard types can be used with all 'OS Fused Switch Disconnectors'
Snap fitting
Available as 1N/O or 1N/C contacts with test function
Test function enables testing without closing the main contacts

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.