The United States the SOR 52NN 54NN, 56NN series pressure switch 



 52NN and 52L series 54NN and 54L series 56NN and 56L series 

 The adjustable range of the protective type hysteresis explosion-proof 
 Model Kpa Kpa Model 
 52NN-K116-M4-B1A 4.98-0-4.58 0.22 52L-K116-M4-B1A 
 52NN-K117-M4-B1A 9.96-0-9.96 0.27 52L-K117-M4-B1A 
 54NN-K117-M4-B1A 51-0-51 1.69 54L-K117-M4-B1A 
 54NN-K118-M4-B1A 102-0 1.69 54L-K118-M4-B1A 
 56NN-K216-M2-F1A 102-0-68 3.4 56L-K216-M2-F1A 
 56NN-K316-M2-F1A 102-0-542 4.7 56L-K316-M2-F1A 
 52 Working pressure: the 1.38Mpa protect the pressure: 2.76Mpa 
 54 5.17Mpa 6.89Mpa 
 56 10.3Mpa 17.2Mpa