|    Contact 
                           resistance   | 
                        50mΩ max.(initial)  | 
                     
                     
                      |    Insulation 
                           resistance   | 
                      100MΩ min.(at 500VDC) | 
                     
                     
                       Dielectric 
                           strength   | 
                      1,000VAC, 50/60 Hz for 1 minute between non-continuous terminals  
                        2,000VAC, 50/60 Hz for 1 minute between current-carrying part and ground 
  | 
                     
                     
                       Vibration  | 
                      Mechanical durability:  
                        10 to 55Hz 1.5mm double amplitude  | 
                     
                     
                       Shock  | 
                      Mechanical durability:  
                        Approx. 500m/sec2 (approx. 50G's)  
                        Malfunction durability:  
                        Approx. 500m/sec2 (approx. 50G's)  | 
                     
                     
                       Ambient 
                           operating 
                          temperature   | 
                      Operating: -25≧ to 55≧  
                        Storage: -30≧ to 80≧ 
  | 
                     
                     
                       HUMIDITY  | 
                      45% to 80% RH | 
                     
                     
                       Mechanical  
                           life(min)  | 
                      Momentary: 2,000,000  
                        Alternate: 250,000  | 
                     
                     
                       Electrical 
                           life(min)   | 
                      Momentary: 100,000(1800 operations/hour)  
                        Alternate: 100,000(1200 operations/hour)  | 
                     
                    |