The STK-PL/AH1 series is based on TMR (Tunneling-Magnetoresistance) technology and open-loop design. It is suitable for DC, AC, pulsed and any kind of irregular current measurement under the isolated conditions. The nominal current range of the STK-PL/AH1 current sensor consists of 10 A, 20 A, 32 A, 40A, 50 A.