uxcell DMiotech Ammeter DC 300A 75mV Current Measure Shunt Resistor Resistance Divider An Ammeter Shunt allows the measurement of current values too large to be directly measured by a particular ammeter. Could be used either in a Digital or an Analog meter. Good quality, good performance and easily installation. If you own a 300A DC digital or analogue current ammeter and need to measure larger currents, this 75mV DC Shunt Resistor is ideal for the job. The Shunt is used to multiply the measuring ragne of current of measuring, good quality, good performance and easily installation.