CSNR151 - 

Closed loop current sensors measure AC, DC and impulse currents with ranges up to 1200 A. The CSN Series is based on the principles of the Hall-effect and the null balance or zero magnetic flux method (feedback system).
Features:

AC, DC and Impulse Current Sensing

Through-Hole, Bus-Bar or Multiple Pin Design

Output Current Expressed as a Voltage Passing Through a Resistor
Specifications:

Operating Temperature: –40°F to +185°F; +32°F to +150°F for CSNB121