1)Square shape analogue ampere panel meter 2)Size 96x96 3) 50/5A ... material Model: 90° SF-96Features:Measuring the current with frequency ranging from 15Hz to 100Hz, these ... be changed without opening meter, convenient to use, dust proof. Under the same secondary current, scale-change can ... 75A 100A, for 10A-10KA use external current transformer with secondary current 5ANotes: For 60A, 75A, 100A meters, ...