Accuracy class 1.5, to BS89/IEC51 Ammeter till 50A are for use without shunt Ammeter 100A (stock no. 315-9521) needs a 100A shunt (stock no. 313-788) Ammeter 300A (stock no. 315-9537) needs a 300A shunt (stock no. 313-794) Integral scales Flame retardant case to UL94V0 Full scale defection 0 to 75mV Operating temperature range –25 to +40° C 72mm high x 72mm wide, panel cut-out 56mm diameter (suitable cutters stock nos. 511-487 and 615-113 ) U-clamp and 4 pin M3 fixing methods supplied including anti-rotation pin