Metrohm 731 Relay Box - Manual (Page 12)

2. Installation
Relay Box 731, Instructions for use 6
Checking and replacing the AC fuses
Line voltage outputs AC1 and AC2 have their own fuses.
Fuse 5A(T)
AC 1
• Use a screwdriver to press down strongly the affected fuse holder
and turn it counterclockwise through 90°. Carefully remove the
fuse holder.
• Carefully remove the fuse from the fuse holder and check its
specifications:
220 … 250 V 5A (slow-blow) Metrohm no. U.600.0023
Please note that the specification of this fuse is different from
that of the main fuse!
• Replace the fuse if necessary and insert it in the fuse holder
again.
Fuse holder AC1