Mounting brackets. CT Operated DIN Moving Iron Ammeters. 90° scale arc, accuracy class 1.5 Manufactured to BS89/IEC51 Frequency range 15 to 400Hz Operating temperature range –25 to +40°C Flame retardant case to UL94V0 Panel cut out: 68 x 68mm, 92 x 92mm Terminal covers supplied separately (see accessories). Ammeters with 5A FSD movements Compatible with Current Transformers with 5A secondaries (stock No. ; 313-839 313-839 ) Overload rating 10x FSD for 5 seconds