how to simulate a model of saturable reactor?

here L is in series with R1 and this series combination is in parallel with R2. the source is connected across a series combination. Just for simplicity I removed other circuitry, here I want to apply 65.67 volt, at that time L inductor is not saturated, so acts as an open circuit & no conduction from R1 (i.e. at case 1). But L will saturate at over voltage (as per below characteristics) & act as a close switch & conduction from R1(i.e. case 2) .

Case 1: V – 65.67, R1 -1.3 ohm, R2-75 ohm Curve for L

 Amp        
 0.0494      
 0.3582      
 0.9803      
 2.54        
 10.0       

 flux Vs
 0.27
 0.319
 0.338
 0.36
 0.4

Case 2 : V > (1.8*65.67), R1 -1.3 ohm, R2-75 ohm