The KR Sense 45A is a small voltage and current sense breakout board. DC current is determined by measuring a voltage drop across a parallel shunt resistor, then converted to a final analog voltage output by the INA-169. Voltage sense is accomplished by scaling to 3.3V ADC range by a precision resistor divider. This version of the sensor features a maximum voltage tolerance of 51.8V at 44.7A, to be exact.
Key Features

Input resistor divider scaled for 13.6V Input voltage (recommended) for 3.3V output
51.8V Max
44.7A Max
Very low zero current offset
Analog current output scaled for 3.3V ADC
Self Powered

Resources

Input Voltage to Voltage on Vout

Input Current to Voltage on Iout

STEP Model